Features： 1、NON CONTACT: The pen can detect the existence of current in the power supply without directly touching the conductor, so that the insulation of the conductor can be detected. 2、VARIOUS FUNCTIONS: The electric pen can distinguish between neutral and living wire of the charged line, sound and light alarm, can detect the radiation of the electric field, and find the fire wire break point. 3、LED LIGHTING: Electric pen with LED lighting function, can work in the dark environment, the pen clip design makes the pen easy to carry. 4、AUTOMATIC SHUT OFF: When not working, you can automatically turn off the power of the electric pen, so you don't have to worry about forgetting to turn off the power and wasting the battery. 5、COMPACT AND PORTABLE: Electricity measuring pen is compact, plastic material is light and easy to carry, is one of the necessary tools for electricians. Specification： Item Type: Inductive Electric Pen Material: Plastic Weight: Approx. 0.045kg / 0.1lb Size: Approx. 14.5 x 2.4 x 2.7cm / 5.7 x 0.9 x 1.1in Use: AC voltage detection, high low sensitivity conversion Sensitivity Range: High sensitivity, 12 to 1000V, low sensitivity, 48 to 1000V Battery Properties: 2 x 1.5V AAA batteries Package List： 1 x Inductive Electric Pen 1 x Instruction