WK Electrical UK Mains Socket Tester 240v Polarity Test

Simple to use: this socket tester allows you to easily check if live, neutral and earth wires are wired correctly on any uk plug socket. simply plugs into the socket for results in seconds Safe and reliable: Instant detects different common wiring fault conditions as well as correctly wired socket. Easy and Quick: This socket tester designed to give quick and simple indication of of a socket's internal wiring without removing the socket outlet from the wall.