Microwave sensor function: 
Microwave sensor is also called automatic door radar, is popular used in the automatic door systems, For detect the pedestrian's movement. It gives signal to the control board for opening the door. 
 
Technology: Microwave and microprocessor
Launch frequency: 24.125GHZ
Launch power: 20 dBm EIRP
Launch frequency density: 5mW/cm2
Assemble an altitude maximal: 3m
Assemble a dip angle: 15 30 45 60
Mounted at 2.3 meters: 4 (W) X 2 (H)