Testing can be achieved without physical contacting for its inductive probe. Insulation operation ensures the safety of testing. In testing voltage, it can automatically detect the live wire or null wire. In the vicinity of the voltage to be tested, the pen will give an alarming sound. Features -Color: Black. -Material: ABS, LCD. -Size: About 19.05X2.54X2.20cm/7.49X1.00X0.86in. -Application range: 12-1000V. - Battery: 2 x button (Included). - Automatically distinguish the and the . With alarm design, portable to use. - Automatic selection of 3 types of sensitivity. Including high, medium, low sensitivity. - Professional voltage detector with non-contact test, voltage sensitivity is from 12 V to 1000 V . - Auto power off, safe, professional and easy to use, small and compact pen that has been designed for easy transport. - It has a simple design, but very practical in use, giving you a . Package list: 1 Set x Voltage Detectors Kit