Item Type: Infrared Thermometer Model: DT8550KH Material: ABS Battery: 1.5V AAA x2 (without battery) Uses: Widely used in chemical and chemical equipment, machinery repair and maintenance, substations, industrial equipment, food processing, home life power and other fields. Basic parameters: Measuring Range: -50 to 550(-58 to 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 to 14) um Repeatability: 1% or 1C Resolution: 0.1C or 0.1F Storage Ambient Temperature: -20-50(-4 to 122) Operating Temperature: 0-50(32 to 122) Measurement Maximum: Yes Fahrenheit or Celsius Conversion: Yes Laser Target Display Selection Function: Single laser Backlight Display Selection Function: Yes Auto Power Off Function: Yes Low Battery Indicator Function: Yes