Item Type: Infrared Thermometer Gun Model: DT8550DH Material: ABS Battery: 2 x 1.5V AAA, without battery. Use: Widely used in chemical and chemical equipment, machinery maintenance, substation, industrial equipment, food processing, household electricity and other fields. Measuring Range: -50 ~ 550, that is, -58 ~ 1022. Temperature Measurement Accuracy: 2% or 2 Measuring Distance Ratio: 12:1 Emissivity: 0.1 to 1.0 Response Time and Response Value Length: 500ms and 8-14um. Repeatability: 1% or 1 Resolution: 0.1 or 0.1 Storage Ambient Temperature: -20-50, -4-122. Operating Temperature: 0-50, that is, 32-122. Measured Maximum Value: Yes Fahrenheit and Celsius Conversion: Yes Laser Target Display Selection Function: Yes Backlight Display Selection Function: Yes Data Retention Function: Yes Automatic Shutdown Function: Yes Low Battery Display Function: Yes