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5 Pack Surface Mounted NC Magnetic Door Window Sensor Switch MC-31 Security Alar

5 Pack Surface Mounted NC Magnetic Door Window Sensor Switch MC-31 Security Alar

$13.99
  • Condition: New
  • Ships from: Denver, US
  • Seller: nasa-7340 (99.4% positive)
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About this item

It uses a normally closed (NC) circuit design to detect opening and closing events when the magnet and switch are separated or aligned. Suitable for residential and light security installations. • NC (Normally Closed) circuit operation.

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