TIF Instruments TIF7610 Infrared IR Laser Thermometer Pro is a modern infrared digital non contact, handhelded thermometer very easy to use. TIF7610 IR Thermometer Pro has an optical lens that collects the radiated infrared energy from the object and focuses it on the detector. The detector converts the energy into an electrical signal that's amplified and displayed as a temperature reading. An infrared thermometer TIF 7610 measures temperature by sensing the magnitude of radiated energy at infrared frequencies. Using this data and the actual temperature of the detector, the thermometer calculates the temperature of the surface that emitted the energy.