The Klein Tools Non-Contact Voltage Tester with Infrared Thermometer, No. NCVT-4IR, provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires. This tool detects AC voltage from 12 to 1,000V with visual and audible indicators. This tool features an backlit LCD display, auto power-off and a pocket clip. The tool includes two AA batteries. The IR thermometer can measure temperatures from -20 to 482 degrees F (-30 to 250 degrees C).