An Arduino Nano controls two relays which in turn can turn the car on, start it, and turn it off. Instead of adding a button for “push to start” he opted for a 13.56MHz RFID module.

Finally, your Arduino toolkit will be incomplete if you ... it’s a good idea to grab a couple of motors and relay modules for ...

[Don] put together a guide that will help you build your own Ambilight Clone for about $40 plus the cost of an Arduino ... [Don] grabbed six ShiftBrite modules. These are fully addressable ...

Menlo Microsystems is demonstrating a way to scale its MEMS relays - micro electromechanical relays - to "power distribution ...