Doors and windows can utilize magnetic contact sensors as a way of detecting when the door or window is opened. The sensor is housed or placed on the frame of the door or window, and the magnet is installed on the door or window itself. When the two lose contact with each other (by opening the window or door), the "circuit" is broken, and the signal is sent to the alarm panel.
Working Voltage: 9-12VDC;
Battery Life: About 1 year (counted at 3 times each day);
Wireless Frequency : 433/315 MHZ
Transmission Range: 1000m
Working Current (mA): 12mA
Static Current(uA): 3uA
Installation Method: For doors or windows
Applications: For Door, Office, Room, Museum, Library, Finance Room, Warehouse, Windows etc.