IR-827 Mini Portable Handheld Digital Infrared Thermometer 12:1 Temperature Meter Outdoor Condition: Item Type: Thermometer Material: ABS IR-827 Temperature Range -30°C-550°C, -22°F-1022°F Accuracy -30°C-0°C/ -4°F-32°F: ±4°C / 7°F 0°C / 32°F or More: ±2% ± 2°C / 3.6°F of Reading Optical Resolution D:S = 12:1 Response Timems500 Milliseconds Emissivity 0.1-1.0 Adjustable Resolution 0.1 °C (0.1 °F) Spectrum Response 8-14um Polarity Display Automatically displayed, "-" indicates a negative sign and a positive sign is unsigned. Diode Laser Output <1mW, 630-670nm, Class 2(II) Automatic Shut-Down Automatically Close after 20 Seconds of Inactivity Operating Temperature 0°C-50°C/ 32°F-122°F Storage Temperature -20°C-60°C/ -4°F-140°F Relative Humidity Work: 10-95% RH, Storage: <80% RH Power Supply 9V Battery (Battery Not Included) Weight 229g / 8.1oz Size 155.5x98.8x27.5mm / 6.1x3.9x1.1in