Features: 1High-precision infrared thermometer. 2The measurement speed can be read in 0.5s. 3Temperature measurement range: -50 ~ 380 C 4Powered by 2 x AAA batteries. 5Easy to operate. Specification: Model: GM320Name: Infrared thermometerWeight: 105gSize: 140 * 70 * 27mm/5.51 * 2.75 * 1.06inch (Approx.)Material: PlasticTemperature measurement range: -50 ~ 380 CResponse wavelength: 5-14umAmbient operating temperature: 0-40 CPower: 2 x AAA batteries (battery is not included)Object distance ratio: 12 to 1 (when the distance between the instrument and the measured object increases the measurement area will alsoCorrespondingly increased in order to meet the industrial precision measurement the object distance ratio of the thermometer is as high as 12: 1) Package List: 1 x Industrial Thermometer1 x User Manual (English) Note: When measuring the temperature aim the thermometer at the object to be measured hold the trigger and display the measurement result in real time. Release the trigger to maintain the reading. If there is no measurement for 8 consecutive seconds the backlight display will automatically turn off and the distance must be considered.