IR-866 Professional Non Contact Infrared Thermometer Temperature Meter -50 - 2250℃(-58 - 4082℉) Condition: Item Type: Infrared Thermometer Material: Plastic Model: IR-866 Measuring Temperature Range: -50 - 2250°C (-58 - 4082°F) Assume Ambient Operating Temperature: 23 - 27 °C (73-80 °F) Accuracy: -50°C - 0°C (-58°F - 32°F): ±3°C (5.4°F) 0°C - 500°C (32°F - 932°F): 1.0%±1°C (1.8°F) 500°C - 1000°C (932°F - 1832°F): 1.5%±2°C (4°F) 1000 °C / 1832 °F Or More: 2.0% ± 2 ° C (4 ° F) Optical Resolution: D: S = 50:1 Emissivity: Adjustable 0.10-1.0 Resolution: 0.1 °C (0.1 °F) < 1000; 1 °C (1 °F) > 1000 Response Time: <250ms Spectral Response: 8-14um Polarity Display: Automatic display, "-" means negative, and positive is unsigned. Diode Laser: Output <1mW, 630 - 670nm, 2(II) Automatic Power Off: the meter automatically turns off after 20 seconds Working Temperature: 0°C - 50°C (32°F - 122°F) Storage Temperature: -20 °C - 60 °C (-4 °F - 140 °F) Relative Humidity: Work: 10 - 95% R; Storage: <80% RH Power: 6F22 9V Battery (Battery Not Included) Weight: Approx. 1390g / 49oz