What is difference between PIR sensor and Microwave Sensor
1), Microwave have better sensibility than Infrared sensor(PIR sensor).
2), PIR sensor have to put the detector outside the lamp, any cover(even paper) on the detector will have much influence on PIR sensibility. But Microwave sensor have not this problem. Microwave sensor can goes through any metalloid material.
3), PIR sensor will have poor sensibility if the circumstance temperature is over 35 Cesius degree. But Microwave sensor have not this limitation.