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Magnetic contact switch (door sensor)

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Product Description

This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. When the magnet is less than 15mm away, the reed switch closes.

They're often used to detect when a door or drawer is open, which is why they have mounting tabs and screws. You can also pick up some double-sided foam tape from a hardware store to mount these, that works well without needing screws.



  • Model : MC 38
  • Contact Capacity : 1A(Maximum Switch Current)
  • Voltage : 12V
  • Rated Power : 12W
  • Actuation Distance : 15mm
  • Size(Approx) : 30*15*28 mm
  • Color : White
  • Housing Material : Plastic



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