MMS.ONE ‘active’ microwave motion sensors will detect a moving object or person and have the advantage over ‘passive’ infra-red sensors since they can detect and distinguish between a wide range of motion patterns. The sensor emits microwaves that are reflected back from moving objects. The resultant shift in the frequency of the wave being proportionate to the speed of the object detected. This shift in frequency is the signal instructing the sensor to switch the automatic operator and open the door.
Visit the Relcross Ltd website for more information on MMS Series (Eagle One) Microwave Motion Sensor