Wide range of electrical testers at Screwfix. This pen is designed for electrical testing and detects voltages in outlets, light fixings, circuit breakers, wires etc, without touching metal. It is used to identify if the conductor is live or not.
The pen is made of plastic an therefore, the surface of the pen is non-conductive for safety. AC Voltage Detector Tester Pen Stick Probe: Amazon.
Touch the wire with the pen tip.

Small and compact pen design for easy carrying.
This instrument is only used to judge whether the conductor is live or not. FAST FREE SHIPPING for Amazon Prime Customers. Buy Circuit Testers at low prices.
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