multicomp pro MP731065 User manual

INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL &
ELECTRONIC EQUIPMENT.
When this product has reached the end of its life it must be treated as Waste Electrical & Electronic
Equipment (WEEE). Any WEEE marked products must not be mixed with general household
waste, but kept separate for the treatment, recovery and recycling of the materials used. Waste
batteries can be returned to any waste battery recycling point which are provided by most battery
retailers.Contact your local authority for details of recycling schemes in your area.
DIGITAL MULTIMETER, 60000 COUNT TRUE RMS
MP731065
Made in China
PO Box 13362 Dublin 2
LS12 2QQ

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Contents
I. Overview------------------------------------------------------------------------ 4
II. Features ------------------------------------------------------------------------ 4
III. Accessories -------------------------------------------------------------------- 5
IV. Safety Information ------------------------------------------------------------ 5
V. Electrical Symbols ------------------------------------------------------------ 6
VI. General Characteristics------------------------------------------------------ 6
VII. External Structure------------------------------------------------------------- 7
VIII. Rotary Switch------------------------------------------------------------------ 8
IX. Button Descriptions----------------------------------------------------------- 9
X. LCD Display-------------------------------------------------------------------10
XI. Operating Instructions ------------------------------------------------------11
XII. Other Functions --------------------------------------------------------------18
XIII. Technical Specifications ----------------------------------------------------19
XIV. Use of magnetic hanger -------------------------------------------------- 24
XV. Maintenance -----------------------------------------------------------------26
I. Overview
The user manual includes related safety information and warning prompt.
Please read the instructions carefully and strictly follow all warning and
precautions.
Warning: Before use, please read the safety information carefully.
This is a handheld 60000-count multimeter with high reliability and safety.
It adopts high-resolution A/D converter and microcontroller data processing
technology. MP731065 is designed with digital LCD, overload protection
across all ranges and unique appearance, making it a safer electrical meter
with superior performance. Characterized by intelligent, high-precision,
high-performance and multifunction, it can measure or test parameters below:
AC/DC voltage
AC voltage, current frequency
Low pass filter (LPF)
AC/DC current
Continuity
Resistance
Diode
Capacitance
Connected with current probe externally
NCV
AUTO-V LOZ
MP731065 has multiple functions including auto range, data hold, MAX/MIN/
Average measurement, REL measurement, low voltage indication, audible
and visual alarm, backlight and auto power off.
II. Features
True RMS to ensure accurate measurement of non-linearity load
The ability to measure 20A (10 seconds of transient measurement)
LoZ function: Low impedance to prevent incorrect reading caused by ghost
voltage
AutoVolt (Select DC/AC voltage automatically)
LPF function to ensure accurate measurement of voltage and frequency
of variable speed drive (VSD)
Measure resistance, continuity, frequency and capacitance
Display MAX/MIN/Average values so as to record signal fluctuation
White backlight to enable user to read displayed data in dark environments
Ergonomic design for one-handed operation

3
4
Contents
I. Overview------------------------------------------------------------------------ 4
II. Features ------------------------------------------------------------------------ 4
III. Accessories -------------------------------------------------------------------- 5
IV. Safety Information ------------------------------------------------------------ 5
V. Electrical Symbols ------------------------------------------------------------ 6
VI. General Characteristics------------------------------------------------------ 6
VII. External Structure------------------------------------------------------------- 7
VIII. Rotary Switch------------------------------------------------------------------ 8
IX. Button Descriptions----------------------------------------------------------- 9
X. LCD Display-------------------------------------------------------------------10
XI. Operating Instructions ------------------------------------------------------11
XII. Other Functions --------------------------------------------------------------18
XIII. Technical Specifications ----------------------------------------------------19
XIV. Use of magnetic hanger -------------------------------------------------- 24
XV. Maintenance -----------------------------------------------------------------26
I. Overview
The user manual includes related safety information and warning prompt.
Please read the instructions carefully and strictly follow all warning and
precautions.
Warning: Before use, please read the safety information carefully.
This is a handheld 60000-count multimeter with high reliability and safety.
It adopts high-resolution A/D converter and microcontroller data processing
technology. MP731065 is designed with digital LCD, overload protection
across all ranges and unique appearance, making it a safer electrical meter
with superior performance. Characterized by intelligent, high-precision,
high-performance and multifunction, it can measure or test parameters below:
AC/DC voltage
AC voltage, current frequency
Low pass filter (LPF)
AC/DC current
Continuity
Resistance
Diode
Capacitance
Connected with current probe externally
NCV
AUTO-V LOZ
MP731065 has multiple functions including auto range, data hold, MAX/MIN/
Average measurement, REL measurement, low voltage indication, audible
and visual alarm, backlight and auto power off.
II. Features
True RMS to ensure accurate measurement of non-linearity load
The ability to measure 20A (10 seconds of transient measurement)
LoZ function: Low impedance to prevent incorrect reading caused by ghost
voltage
AutoVolt (Select DC/AC voltage automatically)
LPF function to ensure accurate measurement of voltage and frequency
of variable speed drive (VSD)
Measure resistance, continuity, frequency and capacitance
Display MAX/MIN/Average values so as to record signal fluctuation
White backlight to enable user to read displayed data in dark environments
Ergonomic design for one-handed operation
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Optional magnetic hanging strap to enable performing measurement
without holding the multimeter by hand.
The current of conductor can be measured without changing or disconnecting
the circuit, by connecting current probe externally.
Drop proof: 2m
CAT III 600V
The user manual includes related safety information and warning prompt.
Please read the instructions carefully and strictly follow all warning and
precautions.
III. Accessories
Open the package to check the accessories shown below. Please contact
you supplier if any of them is found missing or damaged.
Standard accessories:
User manual ......................................................... 1 pc
Test lead................................................................ 1 pair
1.5V AAA battery.................................................. 3 pcs
Magnetic hanger .................................................. 1 set
MP731027 AC current probe (optional).............. 1 pc
IV. Safety Information
Please pay attention to “Warning labels and sentences”. The warnings
identify the operation may pose danger to user and cause damage to the
multimeter or measured equipment.
The meter is in compliance with IEC/EN61010-1, 61010-2-033, Electromagnetic
Radiation EN61326-1 Safety Standard, Double Insulation Standard, Overvoltage
CAT III 600V, and Pollution Class 2. Failure to follow the operating instructions
may compromise or lose the protection provided by the multimeter.
Before use, please check the multimeter and test leads for any damage or
abnormalities. Do not use if any damage occurs, for example, test leads are
exposed, casing is damaged, dead screen or abnormal display occurs. Do
not use without battery cover in place, otherwise it may present a risk of
electric shock.
In case of damaged test leads, please replace by test leads of identical
type and specification.
Do not make contact with exposed wire, connector, unused input terminal
or circuit during use.
Use cautious when working with voltage over DC/AC 30V, please grip the
test lead behind the finger guard to avoid electric shock.
Set the multimeter at maximum range if the measured range is unknown.
Do not apply overrated voltage or current between terminals, or between
any terminal and grounding.
Set the rotary switch to correct range. Disconnect test lead with measured
circuit before switching the functional switch. Do not switch function during
measurement, otherwise damage to the multimeter may occur.
Before measuring on-line resistance, diode or continuity, please switch off
all powers of measured devices, and discharge all capacitors completely.
Before measuring current, please check if the fuse of the multimeter is good,
and switch off the measured current before connecting the multimeter
with circuit, to avoid a risk of electric spark.
Do not keep or use the multimeter in environments with high temperature,
high humidity, inflammable and explosive substance, and strong
electromagnetic fields.
Do not alter the internal wiring without authorization to avoid damage to
the multimeter.
When the symbol “ ” shows on the LCD, please replace the battery
in time to ensure measurement accuracy.
Turn off the power in time after measurement. Remove the battery if the
multimeter is not used for a long time.
V. Electrical Symbols
Symbol
Description
Symbol
Description
Do not place equipment and
its accessories in the trash.
Please dispose properly
according to the local regulation.
Double insulated
AC (Alternating Current)
Grounding
DC (Direct Current)
Warning
Fuse
Low battery
Conform to European Union
standards
UKCA certification mark
CAT Ⅲ
Applicable to test and measure the circuit connected with the
power distribution part of building’s low-voltage MAINS installation.
CAT IV
Applicable to test and measure the circuit connected with the
power supply of building’s low-voltage MAINS installation.
VI. General Characteristics
●Maximum voltage between signal input terminal and COM terminal: See
voltage input protection instruction for each range
●Designed with 10A input terminal: Fuse 11A/1000V (energy: 30KA)
Φ10.3×38mm
●Display count: 60000
●Display uprate rate: About 5 times per second

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●Analogue bar graph: 33 segments. Update for 32times per
second.
●Range: Auto/Manual
●Polarity display: Auto
●Overrange indication: OL
●Low voltage indication: (About ≤3.6±0.2V)
●Operating temperature: 0℃~40℃ (32℉~104℉)
●Storage temperature: -10℃~50℃ (14℉~122℉)
●Relative humidity: ≤75% (0℃~ 30℃ below); ≤50% (30℃~40℃)
●Operating altitude: ≤2000m
●EMC: Conform toEN61326-1
●Battery: 1.5V AAA x 3 (4.5V)
●External dimensions: 169mm x 84mm x 48.8mm
●Weight: About 346g (including battery)
●Safety standard: IEC 61010-1: CATⅢ 600V
VII. External Structure
VIII. Rotary Switch
Figure 2
Figure 1
1. NCV sensing end
2. LCD display
3. Functional buttons: Used to select measurement functions
4. Rotary switch
5. A terminal
6. COM terminal
7. V terminal
8. Holder for magnetic hanger
9. Battery cover and support
OFF
Power off
Auto-V
LoZ LOZ auto AC/DC voltage measurement
V/HZ
AC voltage/ frequency measurement.
Long press the SEL button to enable LPF function.
V
DC voltage measurement
mV mV AC/DC voltage measurement
Continuity/Resistance measurement
Diode/Capacitance measurement
Externally connected current probe measurement
A
HZ
AC current measurement
A DC current measurement
NCV
NCV detection
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●Analogue bar graph: 33 segments. Update for 32times per
second.
●Range: Auto/Manual
●Polarity display: Auto
●Overrange indication: OL
●Low voltage indication: (About ≤3.6±0.2V)
●Operating temperature: 0℃~40℃ (32℉~104℉)
●Storage temperature: -10℃~50℃ (14℉~122℉)
●Relative humidity: ≤75% (0℃~ 30℃ below); ≤50% (30℃~40℃)
●Operating altitude: ≤2000m
●EMC: Conform toEN61326-1
●Battery: 1.5V AAA x 3 (4.5V)
●External dimensions: 169mm x 84mm x 48.8mm
●Weight: About 346g (including battery)
●Safety standard: IEC 61010-1: CATⅢ 600V
VII. External Structure
VIII. Rotary Switch
Figure 2
Figure 1
1. NCV sensing end
2. LCD display
3. Functional buttons: Used to select measurement functions
4. Rotary switch
5. A terminal
6. COM terminal
7. V terminal
8. Holder for magnetic hanger
9. Battery cover and support
OFF
Power off
Auto-V
LoZ LOZ auto AC/DC voltage measurement
V/HZ
AC voltage/ frequency measurement.
Long press the SEL button to enable LPF function.
V
DC voltage measurement
mV mV AC/DC voltage measurement
Continuity/Resistance measurement
Diode/Capacitance measurement
Externally connected current probe measurement
A HZ
AC current measurement
A
DC current measurement
NCV
NCV detection
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IX. Button Descriptions
Figure 3
Instructions of button operation:
Short press: Press button for <2s
Long press: Press button for ≥2S
HOLD/
Backlight
1) Short press this button to enter or exit data hold mode. In HOLD
mode, they symbol “ ” is displayed on the LCD.
2) Long press to turn on/off the backlight. The backlight is turned off
automatically in 5 minutes by default.
REL/BT
1) Short press this button to enter or exit REL mode. The LCD shows the
symbol “△” in REL mode. (For ACV, DCV, Ω, CAP, continuity, diode
and current probe only)
2) When the multimeter enters REL mode, it exits auto range and enters
current range, and the symbol “Manual” flashes four times at a
frequency of 2Hz
3) Under REL mode, the actual measureable scope at current range is
not changed.
4) REL button is disabled in HOLD and MAX/MIN modes.
5) REL button is disabled in Auto-V LoZ mode.
X. LCD Display
1
Low voltage
2
Data hold
3
Dangerous voltage
4
AC measurement
5
DC measurement
6
Continuity measurement
7
Diode
measurement 8
Auto range
9
Externally-connected current probe
10
Auto power off
11
Voltage unit
12
Current/capacitance unit
13
Resistance unit
14
NCV detection
15
Buzzer
16
REL measurement
17
LOZ measurement
18
LPF
19
Frequency unit
20
MAX/MIN/Average measurement
21
Measurement range
Figure 4
Button Description
SEL/LPF
1) Short press: Select testing functions including ACV/Hz, ACA/Hz,
AC/DCmV, continuity/resistance, diode/capacitance, ACA/HZ/DCA
(current probe measurement), NCVLO/HI.
2) Long press in ACV/Hz position to enter or exit LPF function cyclically.
3) Note: The SEL button is disabled in HOLD, MAX/MIN/AVG modes.
RANGE
1). Short press this button once to enter manual range mode (“AUTO” is
not displayed on the LCD) and show current range, short press again
to select range. Long press to exit manual range and enter auto range.
Default setting will be recovered when switching position or restarting
the multimeter.
2) Under frequency measurement mode, short press this button to select
the range of ACV/ACA (equivalent to the RANGE function corresponding
to ACV/ACA).
3) RANGE button is disabled in HOLD, MAX/MIN and REL modes.
MAX/MIN
1) Short press this button to enter “MAX/MIN” statistics mode, refresh
data continuously and view “MAX→MIN→AVG→Current measurement
value→MAX…”. Long press to exit statistics mode and return to normal
working mode. (For ACV, DCV, Ω, CAP, continuity and current probe only)
2) In HOLD mode, MAX/MIN button is disabled.
3) Press REL button and then short press MAX/MIN button to calculate
the MAX/MIN value subtracted by least significant digit.
4) In LPF mode, press MAX/MIN button to calculate the MAX/MIN value.
5) When the multimeter enters statistics mode, it exits auto range and
enters current range, the symbol “Manual” flashes four times at a
frequency of 2Hz, and the auto-off function is disabled. To restore auto
range and auto-off function, please exit MAX/MIN mode (If the auto-off
function is disabled manually, the multimeter will keep this function in
disabled sate).
6) In statistics mode, short press HOLD to stop refreshing data, then view
MAX/MIN value by pressing MAX/MIN button. Short press HOLD again
to exit the HOLD mode and then refresh data.
7) MAX/MIN button is disabled in Auto-V LoZ mode.

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XI.Operating Instructions
Please check the batteries (AAA 1.5V × 3) before use. If the battery power
is low after the multimeter is powered on, the symbol “ ” will be displayed
on the LCD. To ensure measurement accuracy, please replace the battery in
time. The warning symbol “ ” at the terminals indicates the measured
voltage or current cannot exceed the specified value.
1. Automatic AC/DC voltage measurement (Auto-V LoZ) (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to Auto-V LoZ, then connect test lead with measured
power source or load in parallel.
3) Read the measured voltage from LCD. For Auto-V LoZ measurement, the
multimeter selects AC/DC voltage automatically according to the detected
low impedance.
Figure 5
Warning:
To eliminate ghost voltage, the whole circuit is designed with a low
impedance (input impedance is about 3kΩ).
Do not input voltage over 600V. It is possible to measure higher voltage,
but the protection provided by the multimeter can be compromised.
Pay special attention to avoid electric shock when working with high voltage.
To check if the multimeter can function well, please measure a known
voltage before use.
If the measured voltage is >30V (AC/DC), the high voltage symbol “ ”
appears; if >600V (AC/DC), the buzzer sounds consecutively and the red
light is lit up.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
2. AC/DC voltage measurement (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to ACV or DCV position, select function (ACV or DCV)
corresponding to measurement signal, then connect test lead with power
source or load in parallel.
3) Read the measured voltage from the LCD.
4) In ACV position, long press SEL to enable LPF function. Composite
sinusoidal signal generated by inverter or variable-frequency motor can
be measured through the LPF function, as shown in Figure 6 below. Long
press SELECT again to exit LPF function.
5) When measuring ACV or ACV_LPF, short press SELECT to switch to
measure frequency of voltage, then read the frequency of measured
voltage. For measuring frequency of voltage, the amplitude of input voltage
shall be greater than 10% of full range, see “Technical Specifications” for
details.
6) For frequency detection, analogue bar graph and range annunciator can
indicate the current AC voltage, and relatively low range can be selected
asymptotically through manual range function, so as to obtain a stable
reading.
Warning:
The input impedance of the multimeter is about 10MΩ. Measurement error
will be produced when measuring circuit with high impedance. In most
cases, the impedance of circuit is below 10KΩ, thus error of 0.1% or less
can be negligible.
Do not measure input voltage over the range, otherwise correct reading
cannot be obtained and product damage and personal injury may occur.
Do not input voltage over 600V. It is possible to measure higher, but the
protection provided by the multimeter can be compromised.
Pay special attention to avoid electric shock when working with high voltage.
To check if the multimeter can function well, please measure a known
voltage before use.
If the measured voltage is >30V (AC/DC), the high voltage symbol “ ”
appears; if >600V (AC/DC), the buzzer sounds and the red light is lit up.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
3. AC/DC mV voltage measurement (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to AC/DC mV position, short press SEL to switch to
ACmV or DCmV measurement mode, then connect test lead with measured
power source or load in parallel.
3) Read the measured voltage from the LCD.

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XI.Operating Instructions
Please check the batteries (AAA 1.5V × 3) before use. If the battery power
is low after the multimeter is powered on, the symbol “ ” will be displayed
on the LCD. To ensure measurement accuracy, please replace the battery in
time. The warning symbol “ ” at the terminals indicates the measured
voltage or current cannot exceed the specified value.
1. Automatic AC/DC voltage measurement (Auto-V LoZ) (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to Auto-V LoZ, then connect test lead with measured
power source or load in parallel.
3) Read the measured voltage from LCD. For Auto-V LoZ measurement, the
multimeter selects AC/DC voltage automatically according to the detected
low impedance.
Figure 5
Warning:
To eliminate ghost voltage, the whole circuit is designed with a low
impedance (input impedance is about 3kΩ).
Do not input voltage over 600V. It is possible to measure higher voltage,
but the protection provided by the multimeter can be compromised.
Pay special attention to avoid electric shock when working with high voltage.
To check if the multimeter can function well, please measure a known
voltage before use.
If the measured voltage is >30V (AC/DC), the high voltage symbol “ ”
appears; if >600V (AC/DC), the buzzer sounds consecutively and the red
light is lit up.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
2. AC/DC voltage measurement (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to ACV or DCV position, select function (ACV or DCV)
corresponding to measurement signal, then connect test lead with power
source or load in parallel.
3) Read the measured voltage from the LCD.
4) In ACV position, long press SEL to enable LPF function. Composite
sinusoidal signal generated by inverter or variable-frequency motor can
be measured through the LPF function, as shown in Figure 6 below. Long
press SELECT again to exit LPF function.
5) When measuring ACV or ACV_LPF, short press SELECT to switch to
measure frequency of voltage, then read the frequency of measured
voltage. For measuring frequency of voltage, the amplitude of input voltage
shall be greater than 10% of full range, see “Technical Specifications” for
details.
6) For frequency detection, analogue bar graph and range annunciator can
indicate the current AC voltage, and relatively low range can be selected
asymptotically through manual range function, so as to obtain a stable
reading.
Warning:
The input impedance of the multimeter is about 10MΩ. Measurement error
will be produced when measuring circuit with high impedance. In most
cases, the impedance of circuit is below 10KΩ, thus error of 0.1% or less
can be negligible.
Do not measure input voltage over the range, otherwise correct reading
cannot be obtained and product damage and personal injury may occur.
Do not input voltage over 600V. It is possible to measure higher, but the
protection provided by the multimeter can be compromised.
Pay special attention to avoid electric shock when working with high voltage.
To check if the multimeter can function well, please measure a known
voltage before use.
If the measured voltage is >30V (AC/DC), the high voltage symbol “ ”
appears; if >600V (AC/DC), the buzzer sounds and the red light is lit up.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
3. AC/DC mV voltage measurement (Figure 5)
1) Connect red test lead with V terminal, and black with COM.
2) Set the rotary switch to AC/DC mV position, short press SEL to switch to
ACmV or DCmV measurement mode, then connect test lead with measured
power source or load in parallel.
3) Read the measured voltage from the LCD.
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Warning:
The input impedance of the multimeter is about 10MΩ. Measurement error
will be produced when measuring circuit with high impedance. In most
cases, the impedance of circuit is below 10KΩ, thus error of 0.1% or less
can be negligible.
Do not measure input voltage over the range, otherwise correct reading
cannot be obtained and product damage and personal injury may occur.
Do not input voltage over 600.0mV. It is possible to measure higher voltage,
but the protection provided by the multimeter can be compromised.
Pay special attention to avoid electric shock when working with high voltage.
To check if the multimeter can function well, please measure a known
voltage before use.
If the measured voltage is >600V (AC/DC), the high voltage symbol “ ”
appears.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
4. Continuity measurement (Figure 6)
1) Set the rotary switch to “ ”, then short press SEL to switch to continuity
( ) measurement.
2) Connect red test lead with V terminal, and black with COM.Then connect
test lead with both ends of load of measured circuit in parallel.
3) Read from the LCD the resistance of load of measured circuit.
5. Resistance measurement (Figure 6)
1) Set the rotary switch to “ ”, then short press SEL to switch to resistance
(Ω) measurement.
2) Connect red test lead with V terminal, and black with COM. Then connect
test leads with both ends of measured resistor in parallel.
3) Read the measured resistance from the LCD.
Warning:
“OL” will be displayed on the LCD if the measured resistor is open or the
measured resistance is over the maximum range.
Before measuring on-line resistance, please switch off all powers of
measured circuit, and discharge all capacitors completely.
If the resistance of shorted test lead is ≥0.5Ω, please check if test lead is
loose or other problems occur.
It is normal to take several seconds to stabilize the reading if the measured
resistance is over 1MΩ.
Do not input voltage over 30V (DC/AC) to avoid personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
6. Diode measurement (Figure 7)
1) Set the rotary switch to “ ”, then short press SEL to select diode
measurement.
2) Connect red test lead with V terminal, and black with COM. The polarity
of red test lead is “+”, and black is “-”. Connect red test lead with positive
polarity of diode, and black with negative.
3) Read from the LCD the approximate forward voltage of PN junction of
measured diode. The normal voltage of silicon PN junction is about
0.5~0.8V.
Warning: Figure 6
Audible and visual alarm (not in silent mode): If the resistance between both
measured ends is ≤20Ω, the buzzer makes a long beep and the green light
is lit up; if >20Ω, the red light is lit up and the OL light is off.
Before measuring on-line continuity, please switch off all powers of measured
circuit, and discharge all capacitors completely.
The open-circuit voltage is about 2V for continuity measurement. Warning: Figure 7
Do not input voltage over 30V (DC/AC) to avoid personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
Audible and visual alarm (not in silent mode): For < 0.12V, the red light is
lit up and the buzzer makes a long beep; for ≥0.12V and < 2V, the green
light is lit up and the buzzer sounds once; for >2V, the light is off.

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“OL” is displayed if the measured diode is open or the polarity is reversed.
Before measuring on-line diode, please switch off all powers of measured
circuit, and discharge all capacitors completely.
The open-circuit voltage for diode measurement is about 3.0V.
Do not input voltage over 30V (DC/AC) to avoid personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
7. Capacitance measurement (Figure 8)
1) Set the rotary switch to “ ”, then short press SEL to select capacitance
measurement.
2) Connect red test lead with V terminal, and black with COM.Then connect
test leads with both ends of measured capacitor.
3) Read the measured capacitance from the LCD.
Warning:
It is recommended to measure capacitor below 100nF in REL mode.
“OL” is displayed on the LCD if the measured capacitor is shorted or the
measured capacitance is over the maximum range.
Please discharge capacitor completely before measurement (especially for
capacitor with high voltage) to avoid product damage or personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
8. Current probe measurement (ACA/DCA) (Figure 9)
1) Connect current probe with V terminal and COM terminal.
2) Set the rotary switch to “ ”, then press SEL to select ACA/DCA
measurement.
3) Read from the LCD the measured current of current probe. Under ACA
mode of current probe, short press SEL to switch to frequency measurement
in ACA mode of current probe, then read from the LCD the frequency of
current.
Warning:
For frequency measurement under ACA mode of current probe, the input
current amplitude shall be greater than 10% of full range.
The frequency response is 45Hz~400Hz. For range at 600.0A: 1mV = 1A
(AC/DC). The current probe measurement is an input mode of analogue
voltage, the specified accuracy and frequency response refer to the intrinsic
accuracy and frequency response of UT117C (eliminate the error of
current probe).
Disconnect the test lead with measured circuit after all measurement
operations are completed.
9. AC/DC current measurement (Figure 9)
1) Set the rotary switch to “ ”/“ ”.
2) Connect red test lead with A terminal, and black with COM. Then connect
test lead with measured loop in series.
3) Read the measured current from the LCD. The displayed AC current is true
RMS value.
4) When measuring AC current, short press SEL to switch to frequency
measurement under AC current mode, then read from the LCD the frequency
of measured current. For measuring frequency of current, the AC current
amplitude shall be 600mA to 10A; the input amplitude shall be greater than
3A for frequency measurement at range of 10A. If the measured frequency
is unstable, please select low current range manually for a stable readout.
See “Technical Specifications” for details.
5) For frequency detection, analogue bar graph and range indicator indicate
the current AC current.
Figure 9
Warning:
Figure 8
When turning the rotary switch to or from “ ”/“ ”, the LCD shows
“LEAd” for about a second as a warning of testing lead.
Please check if the fuse is good before measuring current. The instructions
to check the fuse is as below:
Set the rotary switch to Ω position, then short-circuit V terminal and A
terminal. If the displayed resistance is about 0.0Ω, the fuse is good,
otherwise damaged.

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“OL” is displayed if the measured diode is open or the polarity is reversed.
Before measuring on-line diode, please switch off all powers of measured
circuit, and discharge all capacitors completely.
The open-circuit voltage for diode measurement is about 3.0V.
Do not input voltage over 30V (DC/AC) to avoid personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
7. Capacitance measurement (Figure 8)
1) Set the rotary switch to “ ”, then short press SEL to select capacitance
measurement.
2) Connect red test lead with V terminal, and black with COM.Then connect
test leads with both ends of measured capacitor.
3) Read the measured capacitance from the LCD.
Warning:
It is recommended to measure capacitor below 100nF in REL mode.
“OL” is displayed on the LCD if the measured capacitor is shorted or the
measured capacitance is over the maximum range.
Please discharge capacitor completely before measurement (especially for
capacitor with high voltage) to avoid product damage or personal injury.
Disconnect the test lead with measured circuit after all measurement
operations are completed.
8. Current probe measurement (ACA/DCA) (Figure 9)
1) Connect current probe with V terminal and COM terminal.
2) Set the rotary switch to “ ”, then press SEL to select ACA/DCA
measurement.
3) Read from the LCD the measured current of current probe. Under ACA
mode of current probe, short press SEL to switch to frequency measurement
in ACA mode of current probe, then read from the LCD the frequency of
current.
Warning:
For frequency measurement under ACA mode of current probe, the input
current amplitude shall be greater than 10% of full range.
The frequency response is 45Hz~400Hz. For range at 600.0A: 1mV = 1A
(AC/DC). The current probe measurement is an input mode of analogue
voltage, the specified accuracy and frequency response refer to the intrinsic
accuracy and frequency response of UT117C (eliminate the error of
current probe).
Disconnect the test lead with measured circuit after all measurement
operations are completed.
9. AC/DC current measurement (Figure 9)
1) Set the rotary switch to “ ”/“ ”.
2) Connect red test lead with A terminal, and black with COM. Then connect
test lead with measured loop in series.
3) Read the measured current from the LCD. The displayed AC current is true
RMS value.
4) When measuring AC current, short press SEL to switch to frequency
measurement under AC current mode, then read from the LCD the frequency
of measured current. For measuring frequency of current, the AC current
amplitude shall be 600mA to 10A; the input amplitude shall be greater than
3A for frequency measurement at range of 10A. If the measured frequency
is unstable, please select low current range manually for a stable readout.
See “Technical Specifications” for details.
5) For frequency detection, analogue bar graph and range indicator indicate
the current AC current.
Figure 9
Warning:
Figure 8
When turning the rotary switch to or from “ ”/“ ”, the LCD shows
“LEAd” for about a second as a warning of testing lead.
Please check if the fuse is good before measuring current. The instructions
to check the fuse is as below:
Set the rotary switch to Ω position, then short-circuit V terminal and A
terminal. If the displayed resistance is about 0.0Ω, the fuse is good,
otherwise damaged.
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18
Please switch off the current of measured loop before connecting the
multimeter with the measured loop, otherwise it can present a risk of
electric spark.
Please select correct input terminal and set the rotary switch to correct
position. If current value is unknown, please perform measurement
starting from large current range. For measuring current over 10A, the
measurement duration shall be less than 10 seconds and the measurement
interval shall be greater than 15 minutes.
If measured current is >10A, the display screen flashes; if >20A, “OL” or
“-OL” is displayed.
If test lead is connected with current input terminal, please do not connect
test lead with any circuit in parallel, otherwise it can damage the built-in
fuse and the multimeter.
After all measurement operations are completed, please switch off the
measured current source before disconnecting test lead with measured
circuit, especially for large current measurement.
10. Non-contact AC voltage (NCV) detection (Figure 10)
1) Set the rotary switch to “ ” (with LED lamp lit up red and “Lo” displayed).
Short press SEL to switch sensitivity between “Lo” and “HI”.
2) When the sensing end approaches electric fields such as outlet or insulated
conductor, the buzzer makes a long beep and the red light is lit up.
3) “Lo” (Low sensitivity): Applied in wall-mounted outlets, power distribution
units, industrial outlets, and multiple power cords. “HI” (High sensitivity):
Applied in hidden outlets or connectors of power supply.
Even the displayed result is that voltage is not present, it does not mean
voltage is present. Do not determine if voltage is present simply by the
NCV. Since the outlet design and the insulation thickness differ from one
another, the operation results may be affected.
XII. Other Functions
1. Silent mode
The multimeter is designed with buzzer. When “MAX” button is held down,
the multimeter is powered on and the LCD shows “BEEP” as indication.
When releasing the button “MAX”, the buzzer is disabled, the multimeter
enters measurement state, and the symbol “ ” is displayed on the LCD.
To enable the buzzer, please power off the multimeter and then restart it.
2. Disable auto-off backlight
The multimeter is designed with auto-off backlight. When “HOLD” button
is held down, the multimeter is powered on and the LCD shows “LoFF” as
indication. When releasing the button “HOLD”, the multimeter enters
measurement state. To enable auto-off backlight function, please power
off the multimeter and then restart it.
3. Disable auto-off function
To disable the auto-off function, please hold down “Select” button and then
power on the multimeter (with the buzzer making five beeps and the symbol
“ ” disappeared at the same time).
4: Awakening function
Under sleep mode, the multimeter can be awakened by all buttons and the
rotary switch.
5. Audible and visual alarm (not in silent mode)
1) Diode:
0.12V: The red light is lit up and the buzzer makes a long beep.
≥0.12V and 2V: The greed light is lit up and the buzzer sounds once.
>2V: The light is off.
Warning: Figure 10 2) Continuity:
≤20Ω: The buzzer makes a long beep and the green light is lit up.
Please make the sensing end approach electric field when performing
measurement, otherwise it can affect the sensitivity.
If the voltage of measured electric field is ≥100V AC, please observe if
the conductor of measured electric field is insulated, so as to avoid personal
injury.
>20Ω: The red light is lit up and the OL light is off.
3) Voltage (Range: 600V):
>600V: The red light is lit up.

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20
XIII. Technical Specifications
Accuracy: ± (a% of reading + b digits); guaranteed for one year
Ambient temperature: 23°C±5°C
Relative humidity: < 75%
Note:
The temperature condition of accuracy is 18°C~28°C, the fluctuation range
of ambient temperature keeps within ±1°C. If the temperature is<18°C or
>28°C, the additional error of temperature coefficient is “0.1 × (specified
accuracy)/°C”.
1. Auto-V LoZ (Auto AC/DC voltage)
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.0V
0.1V
±(1%+3
600V AC/DC
*Input impedance: About 3KΩ
*Range to ensure accuracy: 1%~100% of range
*Least significant digit under short circuit: ≤3 digits
*Auto-V LoZ: Select AC/DC voltage automatically according to the detected
low impedance.
*Auto-V LoZ: The minimum measured AC voltage: 1V; the minimum measured
DC voltage: 0V
*Auto-V LoZ: AC crest factor is up to 3 at 3000 counts, and is down to about
1.5 at 6000 counts. An additional error of ±0.5 %is added for non-sinusoidal
wave.
2. DC voltage
Range Resolution Accuracy±(a% of
reading +b digit)
Overload
protection
600.00mV
0.01mV
±(0.3%+10 600V AC/DC
6.0000V
0.0001V
60.000V
0.001V
600.00V
0.01V
*Input impedance: About 10MΩ
*Range to ensure accuracy: 1%~100% of range
*Least significant digit under short circuit: ≤2 digits
3. AC voltage
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.00mV
0.01mV
± 1 30 600V AC/DC
6.0000V
0.0001V
60.000V
0.001V
600.00V
0.01V
*Display: True RMS of sinusoidal wave
*Input impedance: About 10MΩ
*Frequency response: 45Hz~1000Hz
*Range to ensure accuracy: 1%~100% of range. The least significant digit
is allowed to be <5 digits at voltage range under short circuit.
*AC crest factor is up to 3 at 30000 counts, and is down to about 1.5 at 60000
counts. An additional error of ±0.5 % is added for non-sinusoidal wave.
*Frequency measurement condition: 1.1V < voltage input amplitude≤600V.
When performing HZ measurement at 60V and 600V ranges, the frequency
amplitude shall be greater than10% of range, and the frequency accuracy
is ±(0.01%+3).
4. Low pass filter of AC voltage (LPF)
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.0V 0.1V ±(2%+3 600V AC/DC
*Display: True RMS of sinusoidal wave.
*Input impedance: About 10MΩ
*Frequency response: 45Hz~100Hz
*Range to ensure accuracy: 5%~100% of range. The least significant digit
under short circuit is allowed to be <5 digits.
*AC crest factor is up to 3 at 3000 counts, and is down to about 1.5 at 6000
counts. An additional error of ±0.5 % is added for non-sinusoidal wave.
*The 3db frequency of LPF: About 1.2 KHz.
*Frequency testing: The input amplitude shall be 10% of full range, and the
accuracy is ±(0.01%+3).

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20
XIII. Technical Specifications
Accuracy: ± (a% of reading + b digits); guaranteed for one year
Ambient temperature: 23°C±5°C
Relative humidity: < 75%
Note:
The temperature condition of accuracy is 18°C~28°C, the fluctuation range
of ambient temperature keeps within ±1°C. If the temperature is<18°C or
>28°C, the additional error of temperature coefficient is “0.1 × (specified
accuracy)/°C”.
1. Auto-V LoZ (Auto AC/DC voltage)
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.0V
0.1V
±(1%+3
600V AC/DC
*Input impedance: About 3KΩ
*Range to ensure accuracy: 1%~100% of range
*Least significant digit under short circuit: ≤3 digits
*Auto-V LoZ: Select AC/DC voltage automatically according to the detected
low impedance.
*Auto-V LoZ: The minimum measured AC voltage: 1V; the minimum measured
DC voltage: 0V
*Auto-V LoZ: AC crest factor is up to 3 at 3000 counts, and is down to about
1.5 at 6000 counts. An additional error of ±0.5 %is added for non-sinusoidal
wave.
2. DC voltage
Range Resolution Accuracy±(a% of
reading +b digit)
Overload
protection
600.00mV
0.01mV
±(0.3%+10 600V AC/DC
6.0000V
0.0001V
60.000V
0.001V
600.00V
0.01V
*Input impedance: About 10MΩ
*Range to ensure accuracy: 1%~100% of range
*Least significant digit under short circuit: ≤2 digits
3. AC voltage
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.00mV
0.01mV
± 1 30 600V AC/DC
6.0000V
0.0001V
60.000V
0.001V
600.00V
0.01V
*Display: True RMS of sinusoidal wave
*Input impedance: About 10MΩ
*Frequency response: 45Hz~1000Hz
*Range to ensure accuracy: 1%~100% of range. The least significant digit
is allowed to be <5 digits at voltage range under short circuit.
*AC crest factor is up to 3 at 30000 counts, and is down to about 1.5 at 60000
counts. An additional error of ±0.5 % is added for non-sinusoidal wave.
*Frequency measurement condition: 1.1V < voltage input amplitude≤600V.
When performing HZ measurement at 60V and 600V ranges, the frequency
amplitude shall be greater than10% of range, and the frequency accuracy
is ±(0.01%+3).
4. Low pass filter of AC voltage (LPF)
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.0V 0.1V ±(2%+3 600V AC/DC
*Display: True RMS of sinusoidal wave.
*Input impedance: About 10MΩ
*Frequency response: 45Hz~100Hz
*Range to ensure accuracy: 5%~100% of range. The least significant digit
under short circuit is allowed to be <5 digits.
*AC crest factor is up to 3 at 3000 counts, and is down to about 1.5 at 6000
counts. An additional error of ±0.5 % is added for non-sinusoidal wave.
*The 3db frequency of LPF: About 1.2 KHz.
*Frequency testing: The input amplitude shall be 10% of full range, and the
accuracy is ±(0.01%+3).
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22
5. Frequency
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
99.99Hz
0.01Hz
±(0.01%+ 3
ACV: 600Vrms
ACA: F 11A /
1000V fuse
999.9Hz
0.1Hz
9.999kHz
0.001kHz
50.00kHz
0.01kHz
*Frequency measurement function is designed for ACV and ACA positions only.
*Auto range
*Accuracy range: ACV: 5 Hz~50 kHz
ACA: 45 Hz~5 kHz
*Pulse width: >0.01mS, zero-crossing waveform
*Input amplitude range:
ACV: 1.1V < input amplitude≤600V. The frequency amplitude shall be
greater than10% of range when performing HZ measurement at 60V and
600V ranges.
ACA: 600mA < input amplitude≤10A. The input amplitude shall be greater
than 3A when performing Hz measurement at 10A range.
6. DC current
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
6.0000A
0.0001A
±(0.5%+ 10 F 11A /1000V
10.000A
0.001A
*Range to ensure accuracy: 1%~100% of range
*The least significant digit at current range under open circuit is allowed to
be <2.
Note:
10~20 A: Perform measurement continuously for 10 seconds at most, then
stop for 15 minutes at least.
>10 A: The display screen flashes, and the reading is for reference only.
>20 A: OL is displayed.
7. AC current
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
6.0000A
0.0001A
±(1.5%+30) F 11A /1000V
10.000A 0.001A
*Display: True RMS of sinusoidal wave
*Range to ensure accuracy: 1%~100% of range
*The least significant digit is allowed to be <2 at current range under open
circuit.
*AC crest factor is up to 3 at 30000 counts, and is down to about 1.5 at 60000
counts. An additional error of ± 0.5 % is added for non-sinusoidal wave.
Note:
10~20 A: Perform measurement continuously for 10 seconds at most, then
stop for 15 minutes at least.
>10.00 A: The display screen flashes, and the reading is for reference only.
>20 A: OL is displayed.
8. Resistance
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.00Ω
0.01Ω
±(0.5%+10)
600V AC/DC
6.0000kΩ
0.0001kΩ
±(0.5%+2)
60.000kΩ
0.001kΩ
600.00kΩ
0.01kΩ
6.0000MΩ
0.0001MΩ
±(0.5%+5)
40.00MΩ
0.01MΩ
±(3%+5)
*600Ω range: Measured value = Displayed value – Value of shorted test lead
*Range to ensure accuracy: 1%~100% of range

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9. Capacitance
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
1000nF
1nF
±(1.9%+5) 600V AC/DC
10.00 µ F
0.01 µ F
100.0 µ F
0.1 µ F
10000
µ
F
1
µ
F
± 2.5%+5)
*Auto range (Least significant digit is allowed to be 50 under open circuit.)
*Range to ensure accuracy: 1%~100% of range
*It is recommended to measure in REL mode if measured capacitance is
≤100nF.
*”OL” is displayed if the input capacitance is ≥10000uF.
10. Continuity
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.00Ω 0.01Ω
Circuit open: The buzzer
keeps silent with the
resistance set at about ≥50Ω.
Circuit connected: The
buzzer sounds with the
resistance set at about ≤20Ω.
600V AC/DC
*Open circuit voltage: About 2V
*The buzzer may sound if the resistance of circuit is 20Ω~250Ω.
*The buzzer sounds with LED light flashing.
11. Diode
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
6.0000V 0.0001V ±(0.5%+10) 600V AC/DC
*If the measured value is less than 0.1200V, the red light is lit up and the
buzzer makes a long beep.
*Least significant digit is allowed to be about 5 under short circuit.
12. Current probe measurement (ACA/DCA)
Function Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
ACA
600.0A
0.1A
±(1.8%+3)
600V AC/DC
DCA
600.0A
0.1A
±(0.8%+2)
*Frequency response: 45Hz~400Hz (Sinusoidal wave; frequency response
refers to the intrinsic frequency response of MP731065)
*Current probe measurement is an input mode of analogue voltage, the
conversion ratio is 1mV/1A, and the accuracy specified is the intrinsic
accuracy of MP731065 (eliminate the error of current probe).
*Least significant digit is allowed to be about 5 under short circuit.
XIV. Use of magnetic hanger
1. Overview and features
Magnetic hanger, composed of magnet and hanging strap, can be used to
hang onto power distribution cabinet, photovoltaic combiner box,
automobile bodywork etc, allowing for hands-free measurement and
helping in positioning of meter.
Magnet
2. Installation
Select appropriate installation way (install from right or left side, as shown
on P28), grip the magnet by hand, put the magnet into plastic housing,
and rotate the magnet in a suitable direction. The magnet is held tightly
due to the housing structure and the magnet construction.
Hanging strap

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24
9. Capacitance
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
1000nF
1nF
±(1.9%+5) 600V AC/DC
10.00 µ F
0.01 µ F
100.0 µ F
0.1 µ F
10000
µ
F
1µF
± 2.5%+5)
*Auto range (Least significant digit is allowed to be 50 under open circuit.)
*Range to ensure accuracy: 1%~100% of range
*It is recommended to measure in REL mode if measured capacitance is
≤100nF.
*”OL” is displayed if the input capacitance is ≥10000uF.
10. Continuity
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
600.00Ω 0.01Ω
Circuit open: The buzzer
keeps silent with the
resistance set at about ≥50Ω.
Circuit connected: The
buzzer sounds with the
resistance set at about ≤20Ω.
600V AC/DC
*Open circuit voltage: About 2V
*The buzzer may sound if the resistance of circuit is 20Ω~250Ω.
*The buzzer sounds with LED light flashing.
11. Diode
Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
6.0000V 0.0001V ±(0.5%+10) 600V AC/DC
*If the measured value is less than 0.1200V, the red light is lit up and the
buzzer makes a long beep.
*Least significant digit is allowed to be about 5 under short circuit.
12. Current probe measurement (ACA/DCA)
Function Range Resolution
Accuracy±(a% of
reading +b digit)
Overload
protection
ACA
600.0A
0.1A
±(1.8%+3)
600V AC/DC
DCA
600.0A
0.1A
±(0.8%+2)
*Frequency response: 45Hz~400Hz (Sinusoidal wave; frequency response
refers to the intrinsic frequency response of MP731065)
*Current probe measurement is an input mode of analogue voltage, the
conversion ratio is 1mV/1A, and the accuracy specified is the intrinsic
accuracy of MP731065 (eliminate the error of current probe).
*Least significant digit is allowed to be about 5 under short circuit.
XIV. Use of magnetic hanger
1. Overview and features
Magnetic hanger, composed of magnet and hanging strap, can be used to
hang onto power distribution cabinet, photovoltaic combiner box,
automobile bodywork etc, allowing for hands-free measurement and
helping in positioning of meter.
Magnet
2. Installation
Select appropriate installation way (install from right or left side, as shown
on P28), grip the magnet by hand, put the magnet into plastic housing,
and rotate the magnet in a suitable direction. The magnet is held tightly
due to the housing structure and the magnet construction.
Hanging strap
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26
Steel
Install from right side:
Install from left side:
Installed with hanging strap form right side
3. Applicatiion
Hang onto a nail, hook or other objects, or attach to metal objects such as
a power distribution cabinet, automobile bodywork etc. As shown below:
XV. Maintenance
There are no user serviceable components inside, refer all servicing or
repairs to qualified personnel.
The multimeter is designed with auto calibration technology, all parts and
components (except for specified replaceable ones) should not be
replaced by the user to avoid damage or deviation from the accuracy of
readings.
1. General maintenance
●Please clean the multimeter with wet cloth and mild cleaning agent only,
do not wipe the product surface with chemical solvent.
●If any problem with the multimeter is found, do not use it until repaired.
●Power off the multimeter when not use. Remove the battery if not use for
a long periods.
●Do not store in environments with high humidity, high temperature and
strong electromagnetic fields.

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2. Replace battery or fuse (Figure 11)
Warning:
(1) When the symbol “ ” shows on the LCD, please replace the battery
immediately otherwise the measurement accuracy can be affected.
Battery specification: 1.5V AAA x3 (4.5V)
(2) If the display does not function at all when measuring current, please
check if the built-in fuse has blown. Please check the fuse as per the
instructions below:
Set the rotary switch to Ωposition, then short-circuit V terminal and A
terminal. If the displayed resistance is about 0.0Ω, the fuse is good,
otherwise damaged.
If the fuse is blown out, please replace it by a new one same in original
specifications.
Fuse specification: 11A/1000V (energy: 30KA) Φ10.3×38
Operating steps:
Set the rotary switch to OFF position and remove the test leads from
input terminals.
Battery replacement: Loosen the screw on the battery cover and lift
off the the battery cover and replace the battery. Please install the
battery noting the correct polarity.
Loosen the two screws on the rear cover, remove the rear cover, and
replace the blown fuse with one of identical specification.
Figure 11
Screw
Support and battery cover
Battery
Fuse
Multimeter