Description: Power supply mode: 2 No. 7 batteries (AAA) Size: 153 x 16 x 25mm Operating temperature: - 10 to 50 Storage temperature: - 10 to 50 Operating humidity: 80% Pollution index: 2 Cleaning method: wipe with a damp cloth Operating power supply: 2 No. 7 batteries (the product does not contain batteries) Weight of card absorbing package: 39g (excluding battery) Bag packaging weight: 25g (excluding battery) Specifications: 1. When the pen head senses or detects voltage, the white part of the pen head will glow and beep. It is easy to detect the fire line and know which line has dangerous voltage. 2. There is a button in the middle of the induction pen. When you press it, there is a bright LED at the head of the pen that will glow. It can be used as a flashlight. In a dim working place, you can easily complete the line work without using a flashlight! 3. The shell plastic is molded with AS material, and the appearance line flow is clean. 4. The accessories are composed of LED lights, resistors, plastic tubes, springs and other parts. 5. Function: measure voltage; Measuring range: test range 90-1000V Package Included: 1 * Measuring pencil