SW10 Magnetic Reed Switch 2-Pin 14 mm Glass Tube 500 mA
Part number: SW10Switches, Buttons & Keypads
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Prices updated: 14 Oct 2026
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About this product
A 2-pin magnetic reed switch in a 14 mm glass tube with a 500 mA contact rating. It closes or opens when a magnet approaches, and it suits door, window and lid detection in hobby and security projects.
Specifications
- Pins
- 2
- Contact rating
- 500 mA
- Glass tube length
- 14.00 mm
Frequently asked questions
How do I use a 2-pin reed switch with a microcontroller?
Connect one pin to ground and the other to a GPIO pin with a pull-up resistor. The input reads low when a magnet closes the contact.
Is it normally open or normally closed?
Verify it yourself with a multimeter in continuity mode: measure between the two pins with and without a magnet nearby.
