The Grove Magnetic Switch from Seeed Studio contains a dry reed switch that can be activated by a permanent magnet or electromagnet. The normally open switch is connected to a digital line and has a pull-down resistor giving a logic 0 signal. When a magnet approaches, the contacts close and the output goes to a logic 1.
- Working voltage: 4.75 to 5.25V DC
- Switched power: 10W
- Max current: 500mA
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