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Ships within 48 hours · Estimated delivery Oct 18 - Oct 23
Cable Length: 30cm/ 11
91-inch x 0
* Shank Length: 15mm / 0
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Suits Most Standard Knobs
5pcs RC-36 NC Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch Brown PVC Sheets Cable Length: 30cm/ 11Description: 1. NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). When make order,pls check carefully! 2. These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. 3. Work as an anti theft alarm, perfect for metal door and window.
