Klein Tools NCVT-4IR is a voltage tester that 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.Features Detects AC voltage from 12 to 1000V with visual and audible indicators Backlit LCD display with 0.1-Degree resolution Lightweight, compact tool with pocket clip provides easy storage and quick access Auto power-off conserves and extends battery life Screw-thread battery cap with O-ring ensures dust and water resistance Voltage Tester designed specifically for HVAC applications Convenient laser pointer to target measurement area for temperature measurement IR Thermometer, Laser Pointer, LCD, LED and Audible Beep Indications, Auto-Power Off, Pocket Clip 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 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) Warnings Read, understand, and follow all instructions, cautions and warnings attached to and/or packed with all Test & Measurement devices before each use. Do not direct laser beam into eyes, as this can cause permanent eye damage. Thermometer is NOT intended for use on people or animals. Voltage: 12 - 1000V AC Frequency: 50 - 500 Hz Battery Life: Average 134 hr; Continuous IR 64 hr Type: Non-Contact Standard: CAT IV 1000V Temperature Range: -22 to 482 F (-30 to 250 C) Distance to Spot Ratio: 4:1 Drop Protection: 6.6 ft (2 m) Ingress Protection: IP54 Overall Length: 6.25 in (15.9 cm) Overall Width: 1.25 in (3.2 cm) Overall Height: 1.19 in (3 cm) Weight: 0.112 lbs (50.8 g) Batteries: 2 x AAA Display: Backlit LCD with 0.1-degree resolution Indicators: Visual and audible for voltage detection DownloadsSpec SheetBrochure 1Video DownloadSafety Data SheetInstructionsNCVT4IR-1331376ART - WEB.pdf