SW11 Magnetic Reed Switch 3-Pin 14 mm Glass Tube 500 mA
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Prices updated: 14 Oct 2026
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About this product
A 3-pin magnetic reed switch in a 14 mm glass tube with a 500 mA contact rating. It changes state when a magnet is brought close, and it is used for door and window detection, position sensing and magnetic triggering in hobby and security projects.
Specifications
- Pins
- 3
- Contact rating
- 500 mA
- Glass tube length
- 14.00 mm
Frequently asked questions
How do I wire a 3-pin reed switch?
Use the common pin together with either the NO or NC pin, depending on the logic you need. Check the pin arrangement in the product datasheet, and use a pull-up resistor when reading it with a microcontroller.
Can it switch a motor or a high-current load directly?
No. With a 500 mA contact rating, use it only to drive the gate of a MOSFET, a transistor or a relay coil for larger loads.
