Temperature range: -40 to 450 Degrees C Accuracy: ±1.5% or ±1.5 Degrees C Resolution: 0.1 Degrees C or 0.1F Repeatability: 1% of reading or 1Degrees C Response time: 500mSec, 95% response Spectral response: 8-14 um Emissivity: 0.95 preset Distance to spot size: 10 : 1 Operating temperature: 0 ~ 40Degrees C (32 ~ 104F) Operating humidity: 10 ~ 95 % R.H. Storage temperature: -20 ~ 60 Degrees C (-4 ~ 140F) Power supply: 2x AA Alkaline battery (not included)