Klein ToolsKlein Non-Contact Voltage Tester w/Infrared Thermometer NCVT-4IRThe NCVT-4IR provides non-contact determination of AC voltage in cables; cords; circuit breakers; switches; outlets and wires; as well as infrared (IR) thermometer measurements; making it the perfect choice for HVAC professionals. Klein Non-Contact Voltage Tester w/Infrared Thermometer NCVT-4IR