The measurement object is simply targeted, the button pressed, and within seconds you receive the result. The built-in laser sight makes it easier to find the target. You can check HVAC systems, locate thermal bridges and faulty relays, or inspect the braking system in a car. Non-contact measurement is made possible by proven infrared technology. The infrared radiation emitted by any body with a temperature above absolute zero is converted into an electrical signal, evaluated by a processor, and then displayed on the screen.