Klein® Infrared Digital Thermometer, -4 to 752°F, +/-4°F or +/-2% Above Freezing, +/-4°F Plus 0.2° per°ree Below 32°F Below Freezing Accuracy, 0.1°F Resolution, Backlit LCD Display, <0.25 s Response, 6.01 in L x 1.24 in W x 4.14 in H Dimensions. Klein® IR1 is an infrared thermometer with a targeting laser. It has a wide measurement range of -4 to 752°F and a 10:1 distance-to-spot ratio. The backlit display provides clear readings. Klein® IR1 Infrared Digital Thermometer with Targeting Laser, -4 to 752° F, +/-4° F or +/-2% Above Freezing, +/-4° F Plus 0.2° per°ree Below 32° F Below Freezing Accuracy