AC voltage detection tips for non-contact voltage detectors pen
First, insert the battery as indicated by the positive and negative poles (to avoid accidental electric shock, do not use it until the battery cover is screwed on). Then, short press the "Power On" button to turn on the instrument, and long press the "Power On" button to turn off the instrument.
Insert the probe of the test pen 2 into the power socket or close to the wire, when the AC voltage signal is detected, the induction light will flash, the test pen will light up the signal strength light according to the strength of the voltage signal, and the buzzer will emit alarm sounds of different frequencies. According to the strength of the voltage signal sensed by the test pen, from weak to strong, turn on the 1-3 grid signal strength lights in turn.
