Harbor Freight Tools 7 function User manual

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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference. 17f
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2017 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Specifications
Power
Requirements 9V Battery
Frequency 45 to 450 Hz
DC Amps Ranges: 200mA/2000mA/
20mA/5A
Accuracy (@0mA-200mA) 1.2%±2D;
(@5A) 3%±2D
DC Voltage Ranges: 200mV/2000mV
20/200/250V
Accuracy
(@200mV) 0.5%±1D
(@2000mV-200V) 1%±2D
(@250V) 1%±2D
AC Voltage Ranges: 200/250V
Accuracy (45-450 Hz) 1.2%±10D
Resistance
Ranges:
200/2000/20K/200K/2000K
Ohm
WARNING SYMBOLS AND DEFINITIONS

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Important Safety Information
Read all safety warnings and instructions.
Failure to follow the warnings and instructions may result in
electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
General Safety Rules
1. Electrical shock can cause death
or injury! NEVER TOUCH exposed
conductors of electricity.
2. Inspect the Multimeter before use. In addition
to a general inspection, look specifically for:
a. Pay special attention to the insulation
protecting the connectors.
b. Check the leads for exposed metal,
damaged insulation, and continuity.
c. Replace damaged test lead
immediately, before use.
3. Do not use the multimeter if:
a. The test lead is damaged in any way.
b. The battery is low.
c. Near any explosive gasses or fumes.
d. Any abnormal operation is detected.
(If in doubt about the condition of
the meter, have it serviced.)
e. The battery cover is open.
4. This meter should be powered only by a
single, correctly installed 9V battery.
5. Use caution when working near
voltages above 30 VAC rms, 42 VAC
peak, or 60 VDC. Voltages this high
present a risk of electric shock.
6. Disconnect the circuit’s power
before connecting the meter in
series, when measuring current.
7. Connect the common (COM) test
lead first and disconnect it last.
8. Hold the probes with fingers behind guards.
9. Avoid electrical shock. Use extreme
caution when working near uninsulated
conductors or bus bars. Prevent body
contact with grounded surfaces such
as pipes, radiators, ranges, and cabinet
enclosures when testing voltages.
10. Observe work area conditions. Do
not test voltages in damp or wet
locations. Don’t expose to rain. Keep
work area clean and well lit.
11. Keep children away. Children must
never be allowed in the work area.
12. Stay alert. Watch what you are doing,
use common sense. Do not operate
any meter when you are tired.
13. Do not operate meter if under the influence
of alcohol or drugs. Read warning labels on
prescriptions to determine if your judgment
or reflexes are impaired while taking drugs. If
there is any doubt, do not operate the meter.
14. Due to the danger inherent in such work,
we strongly recommend that only a
licensed electrician work on high-voltage
or other potentially dangerous circuits.
15. Do not test voltage on circuits higher than
250 volts. This type of testing should
only be done by a qualified electrician.
16. Do not test current on circuits
higher than 200 mA.
17. Store idle equipment. When not in use,
meters must be stored in a dry location to
decrease exposure to moisture. Lock up
meters and keep out of reach of children.

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18. Dress properly. Protective, electrically
nonconductive clothes and nonskid footwear
are recommended when working.
19. Wear ANSI-approved impact safety goggles.
20. Only use accessories intended
for use with this meter.
21. The warnings, cautions, and instructions
discussed in this instruction manual cannot
cover all possible conditions and situations
that may occur. It must be understood by the
operator that common sense and caution are
factors which cannot be built into this product,
but must be supplied by the operator.
22. Avoid damaging meter. Use only
as specified in this manual.
23. Prior to testing, resistance, diodes, or
continuity; disconnect all power to the circuit
and discharge all high-voltage capacitors.
24. Performance of this meter may vary
depending on battery condition.
25. Use the proper settings, terminals,
techniques, and range for the tests
performed. Always start with the
range stated in the instructions.
26. Do not apply voltage to the Test Leads when
the Multimeter is in the Ohms testing setting.
Damage can occur to the multimeter.
27. Do not switch between testing modes with
the multimeter connected to a circuit.
28. Never attempt to use the meter at a setting
combination marked as blank on the scale.
29. Prior to testing capacitors, resistance,
diodes, or continuity; disconnect all
power to the circuit and discharge
all high-voltage capacitors.
30. Check fuse before testing current.
31. Use the proper settings, terminals,
techniques, and range for the tests
performed. Always start with the
range stated in the instructions.
32. Have the Multimeter calibrated by
a qualified technician every year. A
multimeter that is not calibrated yearly
will not yield accurate results.
SAVE THESE INSTRUCTIONS.
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section
at the beginning of this manual including all text under
subheadings therein before set up or use of this product.
TO PREVENT SERIOUS INJURY FROM ELECTRIC SHOCK:
ELECTRICAL SHOCK CAN CAUSE DEATH OR INJURY. AVOID
TOUCHING EXPOSED CONDUCTORS OF ELECTRICITY.
Do not test voltage on circuits higher than 250 volts.
Do not test current on circuits higher than 5 amps.

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Controls
5A max
BB
CC
5A
AC Volt
Selection
Area
Battery Test
Selection
Area
DC AMP
Selection
Area
5A Selection
Area/Jack
Transistor
Selection
Area
Diode
Selection
Area
ON/OFF
Switch
Transistor/hFE
Jack
Ohm Selection
Area
DC Volt
Selection Area
Volt/Ohm/
mA Jack
COM Jack
1. Disconnect Test Leads. Use a screwdriver to
remove both screws on the rear of the unit.
Observe polarity, and attach a 9V battery to
the posts. Replace and secure the cover.
2. Do not apply voltage to the Test Leads when
they are connected to the COM (Bottom) and
VΩmA (Center) Jacks and the Multimeter
is in an Ohms testing setting. Damage can
occur to the multimeter or the fuse may blow.
3. Do not switch between testing modes with
the multimeter connected to a circuit.
AC Voltage Measurements
Measure AC conductors carrying up to 250 VAC, 45-450 Hz.
1. Turn the Range Selector Switch to 250
ACV setting. Always start with the highest
range if the voltage is unknown.
2. Plug the red lead into the VΩmA (Center)
Jack. Plug the black lead into the COM
(Bottom) Jack. Switch the Multimeter ON.
3. Carefully touch the exposed conductors
with the tips of the probes to measure
the voltage (not amperes).
4. Read measurement.
5. If the voltage is less than 200 volts, set the
Range Selector Switch to the lower range.
6. When testing is complete, remove Test
Leads and store with multimeter.

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DC Voltage Measurements
Measure DC conductors carrying up to 250 VDC.
1. Turn the Range Selector Switch
to 250 DCV setting.
2. Follow the directions above under
“AC Voltage Measurements”, only
use the DC settings instead.
DC Current Measurements
Measure DC conductors carrying up to 5 amperes.
1. Turn the Range Selector Switch
to the 5A position.
2. Always start with the highest range
if the amperage is unknown.
3. Plug the red lead into the 5ADC (Top)
Jack. Plug the black lead into the COM
(Bottom) Jack. Switch the Multimeter ON.
4. Carefully touch the exposed
conductors with the tips of the probes
to measure the amperage.
Note: Amperage is always tested in
series with the circuit under test.
5. Read measurement.
6. If the reading is less than .2 AMPs,
switch the red lead to the VΩmA (Center)
Jack and set the Range Selector
Switch to the 200 mA setting.
7. When testing is complete, remove Test
Leads and store with multimeter.
Resistance Measurements
Measure circuit resistance up to 2000K Ohms.
1. Warning: Never measure resistance on a
circuit with voltage running through it.
2. Turn the Range Selector Switch
to the 200 Ω position.
3. Plug the red Test Lead into the
VΩmA (Center) Jack. Plug the black
Test Lead into the Com (Bottom)
Jack. Switch the Multimeter ON.
4. Short the Test Leads together. The
meter should read “0” Ohms.
5. Touch the exposed conductors
with the tips of the Test Leads.
6. Read measurement.
7. If the reading is “1”, set the Range Selector
Switch to the next higher Ohm (Ω) position.
Transistor (hFE) Measurements
Test transistors to ensure proper function.
1. Turn the Range Selector Switch
to the hFE position.
2. Switch the Multimeter ON.
3. Insert the transistor pins into the appropriate
hFE jack (NPN or PNP) according to the
EBC (Emitter, Base, Collector) sequence.
4. The meter will show the
approximate hFE value.

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Diode Measurement
Test the voltage drop in diodes.
1. Turn the Range Selector Switch
to the Diode ( ) position.
2. Plug the red Test Lead into the
VΩmA (Center) Jack. Plug the black
Test Lead into the Com (Bottom)
Jack. Switch the Multimeter ON.
3. Connect the red probe to the anode of
the diode and the black to the cathode.
4. The approximate forward voltage drop of
the diode will be displayed in mV. If the
connection is reversed only “1” will be shown.
Battery Charge Measurement
Test the amount of charge left in batteries.
NOTE: This setting is for testing the charge of
small 9V or 1.5V batteries only. Never use
this setting to test automotive or lead-acid
batteries. The high current could cause
damage to the meter and/or cause severe
personal injury. Use the appropriate
DC Voltage setting to test the open circuit
voltage of such batteries instead.
1. Turn the Range Selector Switch
to the Battery ( ) position.
2. Plug the red Test Lead into the
VΩmA (Center) Jack. Plug the black
Test Lead into the Com (Bottom)
Jack. Switch the Multimeter ON.
3. Connect the red probe to the positive
terminal of the battery and the
black to the negative terminal.
4. The battery amperage under a load of 370
mW will be displayed to a resolution of .1mA.
5. Normal amperage:
For a standard 9V (6LR61) battery = 25 mA
6. For a 1.5 V “AA” (LR6) battery = 4 mA
7. To prevent accidents, turn off the
tool and disconnect its power supply
after use. Clean, then store the tool
indoors out of children’s reach.
User-Maintenance Instructions
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ELECTRIC SHOCK:
Turn the Power Switch of the tool to its “OFF” position and remove the test leads
before performing any inspection, maintenance, or cleaning procedures.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the tool. Check for loose
screws, misalignment or binding of moving
parts, cracked or broken parts, damaged
electrical wiring, and any other condition
that may affect its safe operation.
2. AFTER USE, clean external surfaces
of the tool with clean cloth.
3. Remove battery if not in use for long periods.
4. Store unit in a dry location.

5. Replace battery as necessary. 6. Other than the battery, there are no
replaceable parts on this unit. Repairs
should be done by a qualified technician.
Battery Replacement
To replace the battery:
1. Remove the Test Leads from the multimeter.
2. Turn the unit over.
3. Remove both screws.
4. Remove back cover.
5. Pull battery out of unit and
replace with a 9V battery.
6. Replace cover and retighten screws.
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from defects in materials and
workmanship for the period of 90 days from the date of purchase. This warranty does not apply to damage
due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our
facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We
shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special
or consequential damages arising from the use of our product. Some states do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply
to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We
will return repaired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost of returning the
product.
This warranty gives you specific legal rights and you may also have other rights which vary from state
to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797