1The microwave sensor is an active sensor, and the HF sensor emits high frequency electromagnetic waves and receives their echoes. 2This sensor detects changes in the echo or even tiny movements within its detection range. 3The microprocessor triggers the "lights up" command. Signals passing through the door, glass plates and thin wall may be detected. 4The high-frequency output of this sensor is less than 10mW, which is only one percent of the mobile power of mobile phones and microwave ovens. 5This product is a moving object sensor with a detection range of 360 degrees and an operating frequency of 8 GHz. 6With stable working condition, the stable operating temperature is 0 C - +70 C. 7This product uses a microwave sensor (high frequency output is less than 0.2lMw), so it is safe and performs better than infrared sensor. 8It can be installed in products made of glass or plastic, as these materials have little effect on the sensor.