Item Type: AC Voltage Detector_x000D_ Material: ABS_x000D_ Battery: 2 x 1.5V AAA battery, shipped without battery. _x000D_ Working Voltage: 12-1000V AC 1A Practical Tester: The non contact AC voltage detector only needs to place the tip near the wiring board, socket, or power cord. When the pen tip emits a red light and the pen beeps, you know there is voltage present. Professional factory design and production, safe and reliable. 2High in Safety: The electrical tester is safely insulated and can detect AC voltages of 12V?1000V. It is recommended that you should not directly plug the pen into the power supply and wear gloves. 3Multi Functional Use: Also has a flashlight to help you work better in the dark. When AC voltage is detected, the detection light will flash red and the buzzer will emit a brief beep sound. 4Extensive Using: Allows for wide use on the electrical testing of household appliances, automotive, industrial machine and many other equipment. 5Simple Carrying: Comes with a compact size and a light weight as well, the volt tester pen is very convenient to carry with you.1 x_x000D_ _x000D_ AC Voltage Detector 1 x User Manual