The WT323A is a non-contact, color-screen infrared thermometer built for industrial spot-checks on equipment that's too hot or hard to reach to touch. It reads surface temperature from -50C up to 650C with a 12:1 distance-to-spot ratio, 0.1C display resolution, and a fast 0.5-second response, with emissivity adjustable from 0.10 to 1.00 for scanning different materials accurately.