About the product1. This infrared thermometer is used for measuring the temperature of the objects surface, which is applicable for various hot, hazardous or hard-to-reach objects without contact safely and quickly 2. This unit consists of optics, temperature sensor signal amplifier, processing circuit and LCD display. 3. The optics collected the infrared energy emitted by object and focus onto the sensor. Then the sensor translates the energy into an electricity signal. This signal will be turned out to be digital shown on the LCD after the signal amplifier and processing circuit.Features1. Brand new & high quality, lightweight and compact. 2. Simple One-handed operation. 3. Celsius and Fahrenheit switchable. 4. Laser sight allows accurate targeting. 5. Simply point to an object and read its temperature. 6. Precise non-contact IR thermometer, safe and easy to use. 7. Laser on/off switch, Auto power off & temperature data hold. 8. MAX / MIN / AVG/ DIF reading 9. High / low temperature alarm setup 11. Backlight ON/OFF selectable Specification: General Model GM300E Resolution 0.1 Celsius Degree or 0.1 Fahrenheit Measurement Range -50-420 Celsius Degree Repeatability 1% of reading or 1 Celsius Degree Response Time 500mSec, 95% response Spectral Response 8-14um Temperature Accuracy +-1.5 Degree Celsius Emissivity 0.10-1.00 Adjustable (0.95 Preset) Distance to Spot Size 12:1 Operating Temperature 0 - 40 Degree Celsius Storage Temperature -20 - 60 Degree Celsius Power Supply 9V Alkaline or NiCD battery Size 153mm x 101mm x 43mm Weight 147.5g Package Include Package Contents 1 x User Manual 1 x Thermometer Package Weight One Package Weight 0.31kgs / 0.68lb One Package Size 21.5cm * 16cm * 5cm / 8.46inch * 6.3inch * 1.97inch Qty per Carton 40 Carton Weight 9.40kgs / 20.72lb Carton Size 53cm * 45cm * 35cm / 20.87inch * 17.72inch * 13.78inch Loading Container 20GP: 319 cartons * 40 pcs = 12760 pcs 40HQ: 741 cartons * 40 pcs = 29640 pcs