5 minutes, power offautomatically.2. Press the LED light twice quickly to switch to high or low sensitivity detection state. The LED is always on to indicate low sensitivity.
LED flash indicates high sensitivity. The default setting is low sensitivity. 3. When the battery power is low, the LED does not light up and the tester cannot work normally. For example, the test is
After completion, the buzzer may emit a weak sound, and the battery should be replaced in time to ensure that the tester can work properly.
normal work. 4. When the tester is close to the electric field, the red LED flashes and the buzzer alarms. The higher the flashing frequency, the stronger the electric field, which is the live wire and neutral wire of the alternating current, which can be judged by the sound and light alarm.