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RC-33 Home Security Alarm Wired Window Door Magnetic Switch Sensor Detector

RC-33 Home Security Alarm Wired Window Door Magnetic Switch Sensor Detector

$19.28
  • Condition: New
  • Ships from: CN
  • Seller: techbox-store (100% positive)
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About this item

The door magnetic switch is mainly composed of two parts: a switch and a magnet. When the two are separated or close to a certain distance, it causes the switch to open and senses changes in the position of the magnetic switch of the object door.

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