DescriptionEasy to carry in your shirt pocket and with continuous self-test so you always know it's working, this voltage tester pen, non-contact voltage detector allows you to quickly test for energized circuits in the workplace or at home. The Volt Alert AC non-contact voltage testers is easy to use.Feature- Non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires- Small and compact pen, design for easy carrying.- Automatically distinguish the Zero Line and Fire line.- Sound and LED alarm, Sound and light instructions. Auto power off- Automatic selection of 2 kinds of sensitivity.- Scope of application: suitable for detecting12-250v ac and dc current and simply detecting zero line, phase line and breakpoint of ac current, as well as non-live conductor and on-off Circuit on-off test- Press the "inductive breakpoint test" button, the charged symbol is the phase line, if there is a breakpoint in the live circuit, move the test pen, the point where the charged symbol disappears is the break point- Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!Specifications:- Color: Red+Black- Material: Plastic- Size: 15.6 x 2.62 x 2.62cm