The WT323E is the top-spec model in the WT323 family, measuring non-contact surface temperature from -50C all the way to 1050C for high-heat industrial work like furnace or metalwork inspection. It improves on its siblings with a 16:1 distance-to-spot ratio for accurate readings from farther away, plus the same color LCD, adjustable emissivity, and built-in K-type thermocouple contact probe input.