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5 Pack Magnetic Contacts Switch Window Door Sensor for Alarm System NC 3/8"

5 Pack Magnetic Contacts Switch Window Door Sensor for Alarm System NC 3/8"

$12.44
  • Condition: New
  • Ships from: Brooklyn, US
  • Seller: trendyspread (99.4% positive)
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About this item

It consist of a reed switch part and a magnet part. When door closed, reed switch is effected by magnet and turn ON; when door open, reed switch is effected by magnet and turn OFF, trigger alarm. Compatible Devices Alarm Panels.

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