Switch end VK-1 (IO 102-K) is designed to block door and window openings, various types of cabinets, as well as to block other structural elements of buildings and structures to open or displacement with the issuance of the signal "Alarm" (by opening the contacts of the reed switch) to the receiving and control device, concentrator or centralised surveillance panel. The switch constructively consists of a button connected with a permanent magnet and a reed switch. The switch is designed for continuous round-the-clock operation.
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