The Wiha voltage tester will test for the presence or absence of electrical voltage in the range 110V to 250V. A neon indicator lamp inside the handle lights up on detecting the live part of an electrical circuit. The clever design of the clear handle magnifies the lamp making it easier to use and includes a pocket clip. This tool is suitable for use on circuits where the voltage does not exceed 250V. Fully insulated, it conforms to VDE, GS and CE standards.