In order to find out why radar fits perfectly for the various use cases of motion sensors, the customer must learn more about its functionality and characteristics. Radar stands for Radio Detection And Ranging. It transmits electromagnetic waves which travel at the speed of light and are imperceptible to humans. These waves will bounce on objects as they propagate, and a part of the energy will be reflected back to the radar as an echo. The signal is received by the radar antenna and will be processed by the sensor. The echo will be resolved by signal processing. Consequently, an engineer can use the given data to locate an object and output an impulse. Radar can precisely measure movement, presence, velocity, direction, distance and angle of various objects.