Voltage Tester Pen Live/Null Wire Tester Wire Break Detector Circuit Testers
ab 8,39 €
IDENTIFY THE NEUTRAL LINE AND THE LIVE LINE: Use Electric Tester Pen to identify the Live Wire and Null Wire, the beep sound is slow, and the signal light flashes 1/2 grid, it is the Null Wire; the beep sound is fast, the signal light flashes more than 4 grids, it is the live Wire.
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