Features:Noncontact infrared (IR) thermometers use infrared technology to quickly and conveniently measure the surface temperature of objects without physically touching it.You simply aim， pull the trigger and read the temperature on the LCD display.Compact and designed to be taken wherever you go with its wrist strap.Celsius and Fahrenheit Selection (in the hole of the back).NOTE: Product will turn off automatically after 15 seconds of inactivity.Specifications:Type: Pen type IR thermometerUnit of temperature: C & FTemperature range: -50 to 230 degree centigradeAccuracy: ±2% or 2 degree centigradeResolution: 0.1℃ or 0.1℉Response time: Emissivity: 0.95 fixedDistance spot ratio: 1:1Recommended measuring distance: 10cm/ 3.9inAuto power off: About 15sPower supply: 2pcs AG13 cell buttons (1.5V each)Working environment: 0-50 degree centigradeRelative humidity: 10%-95RH non-condensingStorage temperature: -20 to 50 degree centigradeMaterial: ABSItem dimension: 10 * 2.0cm/ 3.9 * 0.8inItem weight: 30g/ 1.05ozPackage dimension: 14.5 * 5 * 3cm/ 5.7 * 2.0 * 1.2inPackage weight：40g/ 1.41ozPackage Content:1 * Pen type IR thermometer1 * User manual