Magnetic contact switch (door sensor)

SB Components Ltd Verified independent store

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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 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 Revision History: As of June 2, 2021, we now have 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" Show more