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Due to USPS closures related to Hurricane Milton, we will be unable to ship orders from Wednesday, Oct 8th through Thursday, Oct 9th. We will ship ASAP once USPS service is restored. Thank you for your patience!
No shipping due to USPS closures related to Hurricane Milton from Oct 8th through Oct 9th. We will ship ASAP once USPS service is restored.

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. But these also have a sticky-foam-tape back so you can also place them in locations you can't attach with screws.

Technical Details

Revision History: As of June 2, 2021, Adafruit sells these with premium wire ends for easy breadboarding.

  • Normally open reed switch
  • ABS enclosure
  • Rated current: 100 mA max
  • Rated voltage: 200 VDC max
  • Distance: 15mm max

Dimensions:

  • Box size (each side): 29mm x 15.2mm x 9mm
  • Cable Length: ~29cm / ~11.4"
    RoHS 2 2011 65 EU CompliantRoHS 2 2015 863 EU Compliant

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