Major tech MT402 User manual

MT402
NON-CONTACT AC
VOLTAGE DETECTOR
INSTRUCTION MANUAL

Warnings
! It is important that users of this tester read, understand, and
follow all warnings, cautions, safety information, and instructions
in this manual before operating or servicing this tester. Failure to
follow instructions could result in death or serious injury.
! Risk of electric shock and burn. Contact with live circuits could
result in death or serious injury.
! Use caution with voltages above 30V AC as a shock hazard may
exist.
! A steady red glow and continuous beep indicates voltage present.
If no indication, voltage could still be present.
! In bright light conditions, the LED visual indicators will be less
visible.
! Do not use if green LED is not illuminated.
! Do not use if tester appears damaged or if the tester is not
operating properly. If in doubt, replace the tester.
! Do not apply more than the rated voltage as marked on the tester
(1000V AC).
! Always wear approved eye protection.
! Before each use, verify operation by testing a known working
circuit that is within the rating of this tester.
! Do not rely on this tester with shielded wire. Operation may be
affected by differences in socket design and insulation thickness
and type.
! Comply with local and national safety requirements.
! If this tester is used in a manner not specified by the
manufacturer, protection provided by the tester may be affected.
Caution
• Do not attempt to repair this tester. It contains no serviceable parts.
• Do not expose the product to extremes in temperature or high humidity.
Symbols
Double Insulated
Caution. Risk of electric shock
Risk of danger. Important information. Read Manual. CAT IV
equipment is designed to protect against transients from the primary
supply level.

Description
54 3 2
1
1. Flashlight
2. Flashlight power ON/OFF
3. Battery cover & compartment
4. NCV power ON/OFF
5. Detector tip (NCV sensor)
Operating Instructions
Turn unit on:
1. Measure with sound alarm
Press the power button. The meter sounds a single beep and the tip is
illuminated green. The tester is now ON and is operational. Test on
known live circuit to verify tester functionality.
2. Measure without sound alarm
Hold down the power button for 3 seconds. The tip is illuminated green
with no beeping sound. The tester is now ON and is operational. Test
on known live circuit to verify tester functionality.
Turn unit off:
Press the power button. The meter sounds a double beep and the tips
green LED turns off. The tester is now OFF and is not operational.
System self-test:
The "power on" Beeper & green LED visually confirms battery sufficiency,
system integrity, and at operation/active mode. Always test on known live
circuits to verify tester functionality prior to use.
Checking for the presence of AC voltage:
Prior to use, test on known live circuits to verify tester functionality. Place
tip of the tester near an AC voltage. If the tester detects voltage, the LED
in the tip of the tester changes colour from green to red and an beeping
sound is generated. The audible sound beeps quicker when the tester tip
is closer to higher voltage.
Low battery indication:
Scenario 1
Power on the tester: The "power on" LED in the tip of the tester changes
from a steady green to a blinking green and a series of beeping sounds is
generated. The tester then turns off. The unit is now OFF and the
batteries need to be replaced. To replace the tester batteries refer to the
maintenance section titled "Battery Replacement.”

Scenario 2
Operating the tester: If the LED lights become dim and the tone fades,
the tester may require new batteries. To replace the tester batteries refer
to the maintenance section titled "Battery Replacement."
Auto Power Off:
After 5 minutes of non-use, the tester automatically powers off to
conserve battery life. Listen for a double beeping sound and watch the
green LED turn off. The tester is now OFF and is not operational.
Flashlight Operating:
Hold down the Flashlight Button to turn on Flashlight. Flashlight is turned
off once the Flashlight button is released.
Battery Replacement:
1. Remove the end cap by gently lifting the pocket clip to release the
catch.
2. Insert two AAA batteries (observe polarity).
3. Replace the end cap.
NOTE: If your meter does not work properly, check the batteries to
make sure that they are still good and properly inserted into the
meter.

Specifications
Voltage Detection Indicators
FUNCTION RANGE
Visual: Red LED flash changes intensity
with higher voltage presence
Audible: Beeping sound changes intensity
with higher voltage presence
Voltage Range 50V AC - 1000V AC (50 to 60Hz)
Operating Temp 0°C to 40°C
Operating Relative Humidity <80%
Operating Altitude 2,000 meters (Max)
Storage Temp 0°C to 40°C
Storage Relative Humidity <80%
Storage Altitude 2,000 meters (Max)
Power ON Indicator Visual: Green LED turns on
Audible: Single Beep
Auto Power & Power OFF
Indicator
Visual: Green LED turns off
Audible: Double Beep
Batteries
Dimensions (mm)
Weight
2 x AAA
176(L) x 26(W) x 25(D)
48g
Voltage Category CAT IV 600V / CAT III 1000V
Safety Conformity EN61010-1 2nd edition, EN 61326 EMC
to CAT III 1000V CAT IV 600V
Pollution Grade 2
Tester Type Non-Contact Voltage Detector

www.major-tech.com www.majortech.com.au
[email protected] [email protected]
MAJOR TECH (PTY) LTD
South Africa Australia