COMER security housing for sliding automatic door open close pir sensor

security housing for sliding automatic door open close pir sensor Save power design, low power indicated, It is widely used for monitoring and security system, with high reliability, small size, easy installation and operation and strong flexibility. It is including one transmitter part and one magnetic part, when the door or window is open, it will be triggered and immediately sends out wireless signal to main alarm system to warning. Installing place: door, window, drawer