Voltage Tester designed specifically for HVAC applications. Non-Contact Voltage Tester provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires, and AC voltage in security, entertainment, communications, environmental control, and irrigation systems. Detects AC voltage from 12 to 1000V with visual and audible indicators. 4:1 distance-to-spot ratio IR thermometer with user selectable Degrees Fahrenheit or Degrees Celsius from -22 to 482-Degree Fahrenheit (-30 to 250-Degree Celsius). Convenient laser pointer to target measurement area for temperature measurement. Backlit LCD display with 0.1-Degree resolution. Auto power-off conserves and extends battery life. Screw-thread battery cap with O-ring ensures dust and water resistance. Lightweight, compact tool with pocket clip provides easy storage and quick access. .