The opening of windows and doors is protected by these wireless magnetic sensors for doors and windows. A magnetic switch inside the sensor trips whenever a thief opens a secured door or window, activating the security system. To ensure that your house is safe, place one at each entrance. Every sensor gives you options for performance and design and is professionally supervised (self-checking). It is compatible with the majority of common security systems that use 433MHz receivers.
LED Signal:
Remove the magnetic detector's antenna: The magnetic detector will be activated and send an alarm signal to the main unit when the door or window is opened from its closed position. LED 1 will become red for two seconds during this time.