Ir Non-contact Gun LCD Infrared Digital Thermometer Tester -50-380&deg;c 12:1 Response Time: 500mSec, 95% response Operating Temperature: 0 ~ 40 (32 ~ 104F) Storage Temperature: -20 ~ 60 (-4 ~ 140F) Dimensions: Approx. 155(H) x 100(L) x 45(W)mm Temperature Range: -50 to 550(-58 to 1022F) Power Supply: 9V Alkaline or NiCd Battery (NOT INCLUDED) Operating Humidity: 10 ~ 95 % R.H non-condensing, up to 3086F Package Included: 1 x User Manual 1 x Infrared Thermometer