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Reed switches are normally-open magnetic switches that close when a magnet is nearby—great for door/drawer sensors, rotation sensing, and simple on/off magnetic triggers.
Bare reed switches (for custom wiring)
- Reed Switch ($4.55) — basic glass-style reed switch for breadboards/prototyping.
- Reed Switch - Insulated ($7.50) — encapsulated/insulated for a more durable build than a bare glass reed.
Modules / breakouts (easier microcontroller hookup)
- Reed Switch Module ($4.35) — simple module with digital output (DO) style hookup.
- Standard mini Reed Switch Module ($7.80) — compact module form factor.
- LilyPad Reed Switch ($14.85) — designed for e-textiles/LilyPad sewing-style projects.
Door/window style magnetic contact sets (pre-housed)
- Magnetic contact switch (door sensor) ($5.05) — ABS housing with separate magnet piece; ideal for doors/windows/drawers.
- Magnetic Door Switch Set ($9.55) — reed switch assembly specifically aimed at door/drawer open detection.
- Magnetic Switch ($7.90) — housed sensor + magnet; triggers at roughly ~1 cm proximity.
Showing 21-25 of 25 products · 10 unavailable products hidden
Wind Vane
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This wind vane is used to indicate the direction from which the wind is blowing. Inside the vane are eight switches, each paired with a unique resistor, allowing a microcontroller to read direction based on the vane’s position.As the vane rotates, a magnet closes the reed switches. In some positi...
ScoutMakes DRV5032 Digital Hall Effect Sensor Breakout
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Add magnetic sensing to your project with this breakout built around the Texas Instruments DRV5032 digital Hall effect sensor. Its digital output changes when the magnetic flux density threshold is crossed, making it useful for detecting magnets, position, lids, doors, rotations and other simple ...
Little Bird 45 in 1 sensor kit for Arduino
This kit brings together a wide range of sensor and interface modules for Arduino projects, experiments and classroom learning. It includes input sensors, output modules, switching modules, power modules and useful building blocks for trying common electronics ideas.Use the modules to explore lig...
Spare part (outdoor unit) for Professional Wireless Weather Station
This spare outdoor unit set is designed for use with professional wireless weather stations, providing the essential sensors needed to accurately monitor local weather conditions. Ideal as a replacement set or for custom weather station projects, it delivers reliable measurements of wind, rainfal...
5V SPST DIL Reed Relay
This small, lightweight 5V SPST reed relay is designed for PCB mounting in a standard DIL (Dual In-Line) package. It switches up to 1A DC with a low 0.1W power consumption, making it suitable for low-power switching applications in sensor circuits, security systems, and instrumentation. Key Feat...
