Item Type: Thermometer_x000D_ Model: DT8550LT_x000D_ Material: ABS_x000D_ Battery: 1.5V AAA x 2 (Shipping Without Battery)_x000D_ Use: Widely Used In Chemical and Chemical Equipment, Machinery Repair and Maintenance, Substations, Industrial Equipment, Food Processing, Home Life Power and Other Fields._x000D_ Basic Parameters:_x000D_ Measurement Range: -50 -550_x000D_ Temperature Measurement Accuracy: 2% or 2_x000D_ Measurement Distance Ratio: 12:1_x000D_ Emissivity: 0.1 to 1.0_x000D_ Response Time and Response Value Length: 500ms and (8-14)um_x000D_ Repeatability: 1% or 1_x000D_ Resolution: 0.1 or 0.1F_x000D_ Storage Ambient Temperature: -20-50(-4-122)_x000D_ Operating Temperature: 0-50(32-122)_x000D_ Measurement Maximum: Yes_x000D_ Fahrenheit or Celsius Conversion: Yes_x000D_ Laser Target Display Selection Function: Yes_x000D_ Backlight Display Selection Function: Yes_x000D_ Data Hold Function: Yes_x000D_ Auto Power Off Function: Yes_x000D_ Low Battery Indicator Function: Yes