bnafes MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch – (4 Sets)
Price: $14.99
(as of Mar 03, 2023 10:33:54 UTC – Details)
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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bnafes MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch – (4 Sets)
$14.99
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