Thermometer measures object temperature from a distance through its emitted radiation. IR Laser Pyrometer features a 20:1 D:S ratio, adjustable emissivity and can be powered by USB or battery. High-Temperature Gun Meter UT309D is ideal for processes that require temperature monitoring. Non-Contact IR Laser Temp Gun UT309D can be applied to power distribution/transportation equipment inspection, HVAC/equipment maintenance, vehicle troubleshooting, and more fields. Features: 3m drop-proof, IP65 Large LED display with backlight MAX/MIN/AVG/DIF mode High/Low-temperature alarm with LED indication Dual laser measurement to enhance the accuracy Lock measurement Adjustable emissivity: adjust according to different testing materials Data hold, auto power-off function Specification: Item Type : Infrared Thermometer Material: Plastic Model: UT309D Temperature Range: -35°C-650°C /-31°F-1202°F Temperature Measurement Accuracy: ≥0℃: ±1.8°C or ±1.8% ≤0℃: ±(1.8 °C + 0.1°C/ °C), ≥32°F: ±3.6°F or ±1.8% ≤32°F℃: ±(±3.6°F + 0.2°F/°F) Display Resolution : 0.1°C/0.1°F D:S: 12:1 Sampling Time: 250mS Emissivity : 0.10-1.0 adjustable Screen Model: EBTN Data Record: 20 group Laser Number: 2 Maximum and Minimum: Support Data Record: Support Auto Power-off: Support Low Battery Indication: Support Uses: Measuring surface temperature in industrial processes Monitoring electrical equipment and motors Checking cooking or refrigeration temperatures Laboratory temperature measurements Home maintenance and HVAC applications Package Includes: 1 x UT309D IR Thermometer