Quick answer
A reed switch is a magnetic switch that closes or opens a circuit when a magnet is nearby. The E-Blox Reed Switch Block lets you add this magnetic control to your circuit builder projects.
How a reed switch works in simple terms
Inside a reed switch are two thin metal contacts (reeds) sealed in a glass tube. When a magnet comes close, the reeds snap together and complete the circuit. Remove the magnet, and they spring apart, breaking the circuit. This makes the reed switch a reliable, low-power magnetic switch with no moving parts you can see.
Where a reed switch block fits in your build
The E-Blox Reed Switch Block is a single-piece component that connects directly into compatible circuit building sets. It acts as a magnetic switch you can trigger with any common magnet. Use it to turn a light on and off, start a motor, or activate a sound module without touching the circuit.
Frequently asked questions
What do I need to use the reed switch block?
You need the E-Blox Reed Switch Block, a compatible circuit building set (like Circuit Blox), and a magnet. The block snaps directly into your existing build.
How do I connect the reed switch block?
Snap the block into your circuit board or base grid just like any other E-Blox component. Position it so the magnet can easily approach the block. The switch works best when the magnet is within about half an inch. Place the reed switch block near an edge of your build for easy magnet access.
Can I use any magnet?
Yes, any common permanent magnet works. A small neodymium magnet (like those on refrigerator magnets or craft magnets) is ideal. The stronger the magnet, the farther away it can trigger the switch.
What happens if the reed switch doesn't work?
Check that the block is fully snapped into the base. Make sure the magnet is close enough. If the circuit still doesn't close, try a stronger magnet or verify that the rest of your circuit is properly connected. Test the reed switch block separately with a simple LED circuit to confirm it works.
Product facts
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Reed Switch Block for Circuit Builder: The Reed Switch Block for Circuit Builder is a single-piece component from E-Blox, designed for use with circuit-building setups. You get a ready-to-use magnetic switch that snaps into your build without soldering or extra wiring.
Reed Switch Block for Circuit Builder