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Magnetic contact switch (door sensor)

Magnetic contact switch (door sensor)
€4.22 *

Prices incl. VAT plus shipping costs

Ready to ship today,
Delivery time appr. 1-3 workdays

  • Adafruit
  • EXP-R15-470
  • 375
  • 1
  • CN
  • 85365011
  • 0.005
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This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is... more

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 13mm (0.5") 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.

Technical Details:
  • Normally open reed switch
  • ABS enclosure
  • Rated current: 100 mA max
  • Rated voltage: 200 VDC max
  • Distance: 15mm max
  • Dimensions:
    • Box size (each side): 27mmx14mmx8.7mm (1inx0.55inx0.34in)
    • Cable Length: 25cm (10in)
    • Weight (per side): 5.2g (0.18oz)
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