"The InfraPro® is a lightweight infrared thermometer that features 50:1 spot size ratio allowing non-contact temperature measurement of a 3 diameter target from 12 feet away. The smaller spot size ratio, laser sighting, and adjustable emissivity improve the accuracy of temperature measurements.The InfraPro® measures from -25°F to +1400°F (-32°C to 760°C). Emissivity is adjustable from 0.10 to 1.00 and the InfraPro also features an RTD probe input jack (RTD probe is optional with InfraPro4 and provided with the InfraPro5) to allow direct contact measurements to help determine the actual target emissivity. The InfraPro is designed for all types of non-contact temperature measurement where objects are too hot (or cold) to touch, or are difficult to reach; including boiler operations, heat exchangers, radiators, motor bearings, air conditioning ducts and electrical panels. The backlit LCD display and laser targeting permit accurate measurements even in low light conditions.The InfraPro5 is rated intrinsically safe Class 1 Division 1, Groups A, B, C, D and Class 1 Zone 0, Aex ia IIC, T4 at 50°C making it safe to operate in explosive atmospheres.InfraPro Infrared Thermometers run on a 9 Volt battery and provide useful features including reading hold, maximum, minimum, average or differential readings, high and low alarms, low battery indicator, trigger lock for long-term monitoring and a memory that holds up to 12 readings."