4 Pcs Brown Wired Magnetic Door Window Contact Reed Switch, Surface-Mounted N...
$10.77
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4 Pcs Brown Wired Magnetic Door Window Contact Reed Switch, Surface-Mounted N...
$10.64
View this item on eBay
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About this item
NC type: NC stands for normally closed. If the magnet and the switch are combined, the circuit will conduct electricity; if the magnet and the switch are separated, the circuit will not conduct electricity.
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