Magnetic contact switch (door sensor)

 280

You can buy Magnetic contact switch door sensor in the Philippines thru www.circuit-help.com.ph

In stock

Product Description

This Magnetic Contact Switch (door sensor) is from Adafruit.

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.

This product and description is from Adafruit.

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