Magnetic contact reed switch (door sensor)
1.5" 8ohm Speaker

Magnetic contact reed switch (door sensor)

Your Price: $3.95
In Stock
Part Number:ASD1435
Quantity Pricing
  • 10 - 99
  • $3.56
  • 100+
  • $3.16
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.

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