DescriptionAre you looking for a professional, yet affordable voltage detector pen? Are you in search of a sturdy, trustworthy tool that can do multiple works at once? If yes, look no further! Our professional voltage detector pen must meet your needs. It is one of the best choices for you.Features- Material: Chrome-vanadium steel, copper. - Testing range: 500V. - Voltage tester screwdriver pen has two kinds of applications, one for measuring circuit electrical pen and the other for screwdriver. - You can use it to directly test voltage as a voltage tester pen, you can also use it as a screwdriver. - When you use the voltage test pen, before testing, it is necessary to insert the screwdriver to the bottom, hold the finger against the end of the handle. The neon tube turns light when there is electricity and operates safely. - Widely used in industry and mine, enterprise decoration, household appliances, network equipment. - Adopts precision production to stable characteristics and high reliability.