The Klein Tools IR1KIT includes the Infrared Thermometer (Cat. No. IR1) and GFCI Receptacle Tester (Cat. No. RT210). The IR1 infrared thermometer with a targeting laser has a wide measurement range from -4 to 752-Degree Fahrenheit (-20 to 400-Degree Celsius) and a 10:1 distance-to-spot ratio. The RT210 GFCI Receptacle Tester detects common wiring problems.Features Not a medical device; thermometer is NOT intended for use on people or animals GFCI Outlet Tester (Cat. No. RT210) detects common wiring problems in standard and GFCI receptacles Infrared Thermometer includes custom pouch and a 9V battery Infrared Thermometer is Certified to IEC EN 61326-1.2006, EN608251.1994+A2.2001+A1.2002 Target Laser on IR1 Fixed emissivity of 0.95 for the Infrared Thermometer Infrared Thermometer (Cat. No. IR1) has an optical resolution (distance-to-spot) of 10:1 Both products have a drop protection to 6.6-Foot (2 m) Infrared Thermometer has a wide measurement range from -4 to 752-Degree Fahrenheit (-20 to 400-Degree Celsius) Auto Power-Off feature of the Infrared Thermometer conserves and extends battery life Warnings Read, understand and follow all instructions, cautions and warnings attached to and/or packed with all test and measurement devices before each use. Thermometer is NOT intended for use on people or animals. Usage of this tester in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death. NEVER look directly into the laser beam emitted by this instrument. LASER RADIATION, Class II laser. Do NOT stare into beam. Exposing eyes to laser radiation can result in severe and permanent eye injuries. Range: -4 F to 752 F (-20 C to 400 C) Accuracy: 4 F or 2%; Below Freezing: 4 F plus 0.2 F per degree below 32 F Distance-to-Spot Ratio: 10:1 Response Time: