This device would determine whether there is some form of electricity running through the wire without you actually needing to touch it. Now, you don\'t have to call a professional electrician nor make contact with the wire just to know whether electricity runs through it Features: Non-contact voltage detection, practical and convenient way to test electrical lines Accurately detects AC voltage ranging from 12V to 1000V, and distinguish them into 3 voltage levels Using the ABS and PVC material, the Voltage Tester can stand wear and tear, and its pocket clip allows easy handling Auto power-off feature conserves energy while the LED torch allows operation even on dark corners Live/Neutral wire distinguish at close range Auto adjust sensitivity makes the test simple Audible and visual alarm always guard your safety The shining prompt of low voltage LED can warn you to replace the battery in time And meanwhile, the Auto Power Off feature can extend battery usage time Specification: Model: PM8909 Material: ABS + PVC Color: Orange+Black Flash Light: White Frequency: 50--60Hz Operating Voltage: 12--1000V AC Alarm Mode: Sound and light Battery:2*1.5V AAA(NOT included) Live/neutral wire Distinguish: sound (High,Medium,low) and LED light NCV Sensitivity: Automatic selection of 3 kinds of sensitivity ( High,Medium,low) Size: 15.8*2*1cm/6.2*0.8*0.4in Weight: Approx.50g/1.8oz Package list: 1 * PM8909 Voltage Tester(Battery NOT included)