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Alarm ? Magnitokontaktnye sensors
 

Magnetic contact detectors are used to detect unauthorized opening of doors, windows, gates, etc. Some of the most used sensors in the OPS.
The main element of the ICD is tight contact (reed switch). Managing contacts which produced a magnetic field: for presentation to the magnet contacts are closed, and if it is to remove the chain is broken and there is an alarm.

Magnetic detectors are of two parts: the reed relay (reed) installed on the stationary part of the design and a magnet installed on the opening module. When the magnet is near the reed relay, its contacts in the closed position. When you open the door of the MCD are spread, causing interruption of contacts.

According to the principle of mounting reed switches share the overhead, Mortice and for mounting on metal door. The value of the working gap between elements of the ICD varies depending on the type of MCD 1 mm to 5 cm There is a limit the use of MCD on metal structures, in this case you must use ferromagnetic pads. According to the standards of Ukraine MCD placed in pairs: the distance from the edge of the door or window is 10 cm, the distance between sensors 10cm.

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