HOLDPEAK 981B Non-Contact Digital Laser Infrared Thermometer Temperature Gun Instant-read -58 to 842 (-50 to 450) with 9V Battery and Emissivity 0.95(Fixed) MEASURE MAX UP TO 842 WITH HIGH ACCURACYTemperature range: -50 ~ 450 (-58~842); Accuracy: 1.5% or 1.5; Distance to Spot Size: 8:1 ; Emissivity: 0.95(Fixed) ; Response Time: &lt;500ms. MULTIFUNCTIONAL INFRARED THERMOMETER YOU WILL NEEDOptional Laser Target Pointer and Backlight ON/OFF, convenient to accurate targeting and operate in case of poor illumination; / button - switching the displayed temperature from Celsius degree to Fahrenheit degree as you need. APPLICABLE TO VARIOUS OF ENVIRONMENTSExtremely Handy, Consistent & Versatile for Instant Temp Readings in Work or Home Applications. You just need to aim at the target to measure the current temperature. MORE EXTRA SPECIFICATIONS THAN OTHERS IR THERMOMETERSPowered by 1 x 9V batteries (Included);Auto Power Shut Off in 7 seconds without any operation ; Low electricity consumption. SAFTER & FASTERLaser Infrared Thermometer Keep Your Hands Safe: This Amazingly Fast & Safe Way to Measure Temps Without Surface Contact.