LAP Voltage Detector
(2 products)Voltage detector are amplified electronic testers or test pens that detect the changing electric field around AC energized objects. No direct metallic contact with the circuit is required to establish the findings. A non-contact voltage tester is used to indicate if power is off without touching any wires. Usually the pen will have a light or make a noise when it finds a live wire, even a covered one. A range of brands available.
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