This instrument is a professional hand-held non-contact infrared thermometer. Use simple, rigorous design, measurement accuracy. Wide temperature range and etc. It has a laser sighting VA display with backlight, high/low temperature alarm, Adjustable emissivity and Automatic shutdown function. When you target the object detection window at the subject, then it will be able to quickly and accurately measure the temperature of it. Features: Non-Contact Measurement: the thermometer can measure various hot, hazardous or hard-to-reach objects and liquids without contact, convenient to measure and safe to use. Measurement Range: -50℃~550℃(-58℉~1022℉) wide measuring range with Celsius(°C) and Fahrenheit(°F) optional temperature units. Measuring Distance: D:S = 12:1. D is the measured distance; S is the diameter of the measured object. Smoke should not come into contact with the temperature sensitive area. The recommended angle is around 45°~60°. Low Consumption & Auto-off: just powered by 1pcs AA batteries(NOT included), and the tester will automatic shutdown if there is no operation within 20 seconds, low battery indication on the upper right corner. Data Reading: HD VA reverse color display screen with backlit display, combine with data hold function, which allow you to check the data clearly. Other Features: 0.1~1.00 adjustable emissivity, ≤0.5s fast response time, Max Min Value, laser positioning, High/Low Temperature Warning, etc. Wide Applications: can be used for the non-contact temperature measurement of the glass processing, refrigerated temperature measure, metal working, kitchen oil temperature, etc. Industrial grade thermometers cannot measure human body temperature. Specifications: Model: TH104 Measuring Range: -50℃~550℃(-58℉~1022℉) LCD Resolution: 0.1 ℃/°F Power Consumption: ≤50mw Measuring Distance: D:S=12:1 Measuring Time: ≤0.5 seconds Emissivity: 0.1~1.00 adjustable Relative Humidity: 90% Automatic Shutdown: 20 seconds Battery: 1 * AA battery(not included) Ambient Temperature: 10℃~30℃ Storage Temperature: -10℃~40℃ Screen Display: VA display screen Low Current Warning: √ lnfrared Laser: √ °C/°F Adjustable: √ Maximum/minimum Value: √ Data Retention: √ High/Low Temperature Warning: √ Material: ABS Item Size: 146.9 * 89.7 * 42.5 mm / 5.78 * 3.53 * 1.67 inch Item Weight: 145g / 5.11oz Package Size: 175 * 105 * 48mm / 6.89 * 4.13 * 1.89 inch Package Weight: 199g / 7.02oz Package List: 1 * Infrared Thermometer 1 * User Manual