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3sets White Iron Door Recessed Wired Security Window Door Contact Sensor Alar... SALE

3sets White Iron Door Recessed Wired Security Window Door Contact Sensor Alar...

$14.38$15.98
  • Condition: New
  • Ships from: York, US
  • Seller: thedailysparks (99.2% positive)
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About this item

Reed switch is an electrical switch operated by an applied magnetic field. Normally Closed : Magnet Near - Connect Circuit, Magnet Away - Break Circuit. 2: The magnet part is installed on the movable door and window.

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