Digital Infrared Thermometer, Non-Contact Laser IR Temperature Gun Instant-read with one 9V battery(Included)Emissivity 0.95(fixed) Range -50 to 550(-58 to 1022) emperature range: -50 to 550(-58 to 1022); Accuracy: 1.5% or 1.5; Distance to Spot Size: 12:1 ; Emissivity: 0.95(fixed); Response Time: &lt;500ms. Optional Laser Target Pointer and Backlight ON/OFF, convenient to accurate targeting and operate in case of poor illumination; /H button  switching the displayed temperature from Celsius degree to Fahrenheit degree as you need. Powered by one 9V battery(Included);Auto Power Shut Off in 7 seconds without any operation ; Low electricity consumption. Extremely 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. Keep Your Hands Safe: This Amazingly Fast & Safe Way to Measure Temps Without Surface Contact.