Wireless RF Remote & Receiver! Easy & Cheap! Great for Arduino and Raspberry Pi!
A review of Adafruits inexpensive RF keyfob remote and receiver. This is by far the easiest and least expensive RF solutions I've seen! It's a "turnkey" solution - e.g. it works right out of the box. It can directly control things (like an LED or transisotr) or be used to trigger a digital input pin on an Arduino or Raspberry Pi!
Check out another Arduino Wireless Option: http://amzn.to/1wMwzUe
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