When transmitted at a certain frequency, the microwaves sent out will be reflected back when they encounter fixed objects. The frequency of the reflected microwaves remains unchanged, and the detector will not issue an alarm signal.
When the emitted microwaves encounter a moving object, the frequency of the reflected microwaves will change, that is, f emit ≠ f received. At this time， the microwave detector will send out an alarm signal.
When a infrared motion detector is installed on the beautiful interior ceiling, it is highly suitable for indoor security protection in residential areas. The design is elegant and classic, with a novel and distinctive appearance, and it also has a more decorative effect.
1. Secondary automatic pulse adjustment
2. Automatic temperature compensation
3. Flame-retardant housing
