bnafes MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch - (4 Sets)
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Description
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1. Product Name: Magnetic Door Switch; Model: MC-33C 2. Contact Type: NC (Normally Closed) 3. Work as an anti-theft alarm, ideal for metal door and window 4. 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 ) 5. 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
Description
(1)
1. Product Name: Magnetic Door Switch; Model: MC-33C 2. Contact Type: NC (Normally Closed) 3. Work as an anti-theft alarm, ideal for metal door and window 4. 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 ) 5. 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
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