Protmex PM8908C Non-Contact Voltage Tester with LED Flashlight 12V-1000V Voltage Detector Pen with Alarm Mode & Live/Null Wire Judgment Practical and convenient way to test electrical lines. The voltage tester can detects AC voltage ranging from 12V to 1000V accurately, and distinguish them into 3 voltage levels. Using the ABS and PVC material, the non contact 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/Null 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 meanwhine, the Auto Power Off feature can extend battery usage time. Ensure your overall safety voltage detector. Now, you don't have to call a professional electrician nor make contact with the wire just to know whether electricity runs through it. This non contact ac voltage detector would determine whether there is some form of electricity running through the wire without you actually needing to touch it. CONVENIENT voltage tester - Includes low voltage indicator. ABS/PVC construction protects your investment, allowing voltage tester to withstand wear and tear.