Klein Tools NCVT2P Dual Range Non-Contact Voltage Tester 12 - 1000V ACNon contact voltage tester's dual range capabilities allow tester to detect from 12 to 1000 V AC or 70 to 1000V AC for a broad variety of low voltage or standard voltage applications Electrical voltage tester detects voltage with simultaneous visual and audible indicators Non contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems Green light indicates no voltage Lightweight, compact