Magnetic detectors consist of a reed switch that conducts electricity and a magnet in the housing. The device is connected with screws or glue. Magnetic detectors are very delicate, so they cannot be driven or twisted. The reed switches protect the object against burglary through doors and windows, have motion and temperature detection. However, they do not work if a window is broken or if you enter a room without opening the sash.
Magnetic detectors are the basis of any alarm system. Thanks to them, the alarm will signal the client before the intruder manages to enter the protected room. The device detects an attempt to open windows and doors.
A magnetic detector consists of small and delicate components. The first part is a magnet, which is located in an aesthetic cover. It is placed at the wing of doors or windows. The second element has terminals, which are used to lead the electric current. The element contains a reed switch, which is mounted in the frame, e.g. a window, so that after closing both elements are next to each other. Thanks to the electrical contact, the detectors move away from each other after opening, which causes the reed contact to open.
The magnet should be mounted on the movable part of the door or window. The reed switch is placed in a fixed element. Use a screw or glue to fix the detectors to a surface that should be at least 1 cm thick. Please note that you cannot twist or cut the magnet part. Do not hit or hammer the reed part into the hole with a hammer, as it is very delicate. Connecting a magnetic detector to the control panel is the same as connecting a standard motion detector. Note that one reed contact can operate on one alarm line. The installation of magnetic detectors in metal objects significantly reduces the range of the device. In this case, you will need to purchase plastic or wooden frames, which will be placed on the door or window to install the contact.
Magnetic detectors protect mainly against burglary through doors and windows. More advanced equipment also provides motion, smoke, flooding and rapid temperature difference detection. On the other hand, reed switches do not signal when a window is broken or pushed out, nor do they protect against entering the building without opening the sash.