Perfect-Prime TM0826, Temperature Digital Non-contact Infrared IR Thermometer Laser Pointer Gun -58&deg;F ~ 1022&deg;F Temperature range: -50 to 550 Accuracy: 2% or  2, Resolution: 0.1 or 0.1F Emissivity: 0.95 fixed value Distance to spot size: 12 : 1 Power supply: 9V Battery (not included)