Klein® Voltage Tester, Dual Range Non-Contact, 70 to 1000 VAC/12 to 1000 VAC Maximum Measurable Voltage, (2) AAA Battery, 50 to 500 Hz Frequency, IP54 Enclosure, Polycarbonate, 5.82 in L x 0.86 in W x 1.09 in H Dimensions. The NCVT-2P is a non-contact voltage tester that detects 12 to 1000 VAC and indicates the presence of voltage in cables, cords, circuit breakers, light fixtures, switches, outlets and wires as well as AC voltage in doorbells, thermostats, low voltage lighting and irrigation systems. Includes both visual and audible signals. The NCVT-2P is rugged enough for any job site. Klein® NCVT2P Dual Range Non-Contact Voltage Tester, 70 to 1000 VAC/12 to 1000 VAC Max Measurable