General Tools IRT206 Heat Seeker Infrared Thermometer, Mid-Range, 8:1 Industrial thermometer is rugged and ergonomically designed for general purposes Laser thermometer has a switchable On/Off laser sighting Digital thermometer has a temperature range of -4 to 605Farenheit (0 to 318Celcsius) Thermometer emissivity is fixed at 0.95 The infrared thermometer has a resolution: 0.5F/0.5C Class II laser product, &lt;1mW power output