Temperature Range -60 ~ 760°C (-76 ~ 1400°F) Thermocouple Temperature Range -64 ~ 1400°C (-83.2 ~ 2552°F) Distance to Spor Ratio 30 : 1 Response time 1sec Emissivity 0.1 ~ 1.00 adjustable Resolution 0.1°C/0.1°F at -83.2 ~ 999.9(°C/°F); otherwise 1°C/1°F Accuracy ±1.0°C (1.8°F) [Tobj=15~ 35°C, Tamb=25°C ]; ±(2+0.05/°C)°C [Tobj=-60~ °C, Tamb=23±3°C ]; ±2% of reading [Tobj=-60~ °C, Tamb=23±3°C ]; 2°C (4°F) whichever is greater Thermocouple accuracy ±1% of reading or 1°C (1.8°F);whichever is greater (test Tamb=23±6°C) Power 2 x 1.5V (AA Battery) Size 195x121x46mm Weight 282g Standard accessories batteries, instruction manual, warranty card, certificate of product conformance