Easy to Use Need wire to connect to alarm control panel, but the wire is not included in the package.
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Normally Closed NC means normally closed, closed when the door is open. When the magnet is close, it will establish a connection, and when the magnet is removed, the connection will be broken.
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Wide Application Double-sided adhesive tape surface mounting, operating clearance ≥15mm. Suitable for wood/glass/plastic doors
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