Because no one wants the hassle of standing up and reaching for a chain every time they want to adjust the fan or light. Some homes have several ceiling fans, so we'll narrow down our recommendation ...

Bare bones code to control the Arlec Grid Connect Ceiling Fan (replacing the 433MHz remote) from an Arduino using the MX-RM-5V a cheap chinese 433MHz transmitter or similar. Take note that pin D11 is ...