Features:1. Made of rubber material, it feels comfortable and it is not easy to fall off after a long time of using.2. Passive infrared sensor, hot and cold temperature measurement with one button3. LCD backlight display for easy reading at dim environment.4. 0.5 second non-contact fast response5. Widely used in chemical, environmental testing, heating and refrigeration industriesSpecification:: SMART SENSORModel: AR320Maximum Measured Temperature: 120 and AboveTemperature Range: -32~380 (-26~716)Accuracy: 2% or 2Distance Ratio: 12:1Emissivity: 0.95 PresetResolution: 0.1or 0.1Wavelength And Response Time: (8-14) Um and 500msRepeatability: 1% or 0.1Data Retention Function / Laser Target Pointer: YesBacklight Display Selection / Autopoweroff: YesPower: 2 * 1.5V AAA Battery (not included)Weight: Approx. 138g / 4.9ozSize: Approx. 14.1 * 7 * 3.4cm / 5.6 * 2.8 * 1.3inPackage List:1 * Digital Infrared ThermometerNote:Please note that this product is for industrial use and cannot be used to measure human body temperature..