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MASTFUYI AC Voltage Electric Compact Pen Current Testing Pen Circuit Breaker Finder 12V/48V-1000V Voltage Sensitivity Adjustable

Instructions

1. Turn on/off the tester

Tum on the tester: Click on the power key, tester self-test, flashlight, induced voltage signal indicator, signal strength indicator (high, low), the button indicator flashes at the same time, the power indicator is always on.

2. Turn on/off the flashlight

Turn on the flashlight: With the tester turned on, press the flashlight to turn on the key and turn on the flashlight.
Tur off the flashlight: With the flashlight turned on, press the flashlight to turn the key off and turn off the flashlight.
If the flashlight is not turned off, it will automatically go out after about 5 minutes.

3. AC voltage detection

Insert the probe of the tester into a power outlet or near a live wire. When the tester detects an AC voltage signal, the induced voltage signal indicator flashes. The tester lights up the response signal strength indicator (high, Low) At the same time, the buzzer sounds alarms of different frequencies. When an AC voltage signal is sensed, the green signal strength indicator (low) is on; when a higher AC voltage signal is sensed, the red signal strength indicator (high) is on.

4. zero line / fire line discrimination

The two wires to be tested are separated as much as possible, and then the probes of the tester are respectively placed close to the wires. If the socket is the socket, the probe is inserted into the jack, and the tester detects that the strong signal is a hot wire, and the sensing signal is weak or no signal is the zero line.

5. AC voltage detection range selection

Tester power on default AC voltage detection range: about 48~1000V lightly tap the AC voltage detection range to switch on the key (S), the detection range indicator lights up, the tester can detect the voltage range is about 12~1000V. Then tap the AC voltage detection range to switch on the key (S). The detection range indicator is off. The tester can detect the voltage range from 48 to 1000V.

6. Automatic shutdown function

When the tester is not operating for about 5 minutes and no voltage signal is detected, the tester will automatically shut down.

7. Battery undervoltage indication

When the battery voltage is lower than about 2.6V, the power indicator flashes 3 times, and the buzzer sounds automatically to shut down.
Please replace the battery in time.