Designed to block garage doors, hangars, railway containers, telephone cabinets and other structural magnetoconductive (metal) and magnetoneuroconductive (aluminium, wood, etc.) elements of buildings and structures on opening or displacement with the issuance of the alarm notification to the loop of the receiving and control device by opening or closing the contacts of the reed. The housing is plastic, non-disassembled.
Without protective corrugated sleeve.
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