For non-contact surface-temperature checks on electrical equipment, mechanical assemblies and process objects over −30…+650 °C. A 12:1 optical ratio supports distance selection based on target size. Emissivity adjusts from 0.10 to 1.00, with backlighting and laser aiming. Negative-temperature accuracy is specified separately. The laser is an aiming aid, not a distance meter; the instrument measures the object surface rather than air temperature.