Features: Laser Target Data Hold Backlight Flashlight Auto Power Off Selectable °C/°F Min, Max, Avg readings High and Low-temperature alarm setting Show AL when ambient temp is lower than 0°C, AH when higher than 60°C Widely use in equipment and examination of steel, glass, cement production process temperature. Specifications: Temperature Range: -30~550°C / (-22~1022°F) Accuracy: ±3°C (±3% of rdg, -30~0°C (-22~32°F) ±2°C (±2% of rdg, 0~100°C (32~212°F) ±3°C (±3% of rdg, ≥100°C (32°F) Distance Spot Ratio: 12:1 Emissivity: 0.1~1.0 adjustable (default at 0.95) Resolution: 0.1°C / 0.1°F Response Time: 500ms Repeatability: 1% of rdg or 1°C Spectral response: 8~14um Ambient operating range: 0~40°C(32~104°F) Relative Humidity: 10-95% RH non-condensing Storage Temperature: -20~60°C (-4~140°F) without battery Battery Life: 12hrs Power Supply: 9V Size: 130 × 50 × 180mm Weight: 155g (w/out batttery) Set Includes: 1 x IR Thermometer 1 x 9V Battery English User Manual