This document is the operating manual for the Infrared Thermometer 72-820 model, describing the features and characteristics of the product.
This manual introduces the Tenma 72-820 infrared thermometer, describing its temperature‑measurement principle, power options (battery or USB), and key features such as a 0°F‑1000°F range and a 12:1 distance‑to‑spot ratio.
It also covers safety precautions, button functions, measurement techniques (distance‑to‑spot, field of view, emissivity), battery replacement, maintenance steps, and troubleshooting tips.