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20 Sets Wired Door Window Alarm Sensors | Magnetic Contact Security System

20 Sets Wired Door Window Alarm Sensors | Magnetic Contact Security System

$51.99
  • Condition: New
  • Ships from: Yucca Valley, US
  • Seller: thegoodbuystore (99.3% positive)
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About this item

Conversely, when the magnet is far away from the switch, the signal is disconnected. This working principle is ideal for alarms, LED systems, door openers, and more. Their robust design ensures a longer service life with excellent sturdiness and resistance.

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