I have one switch that sends a switched power line to the light. It then goes to the fan. I want to control the fan separately from the light, on a timer. So i need a wireless module that I will install in the fan box that turns the fan on and off. That module needs to be controlled by a switch not connected to the fan module with a wire, but RF or something.
The problem comes from the fact that some people think a single switch for the bathroom light and fan is ok. So they wire them from one switch. I think the fan should be controlled separately from the light. For example, I might want to turn the light off and have a timer leaving the fan on for 10 minutes. But there’s no wire to carry that signal, so I need a power on-off module at the fan that is controlled by a switch wirelessly.