Accurate voltage detection: The detection voltage range is from 12V to 1000V, which is very suitable as a wire tester for home and industrial use. Non-contact and safe operation: Provides non-contact testing to safely identify live or neutral wires without contact. [LED flashlight for dark environments] Built-in LED flashlight, convenient for use in low-light conditions, and the function as an electronic test pen is also improved. [Sound & visual reminder] When voltage is detected, the pen beep and display a red or green LED light, clearly showing the live and neutral wires to safe operation. Compact and portable design: and equipped with a clip for easy installation, it is very suitable for carrying in power testing projects Power Supply:2 x AAA batteries(Not included batteries) Colour:Black Material:Plastic Package Contents: 1 * electrical test lead Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.