On Thu, 26 Mar 2020 17:16:29 +0000, Another Dave
wrote:

I quite fancy sitting at my desk in front of my (Linux) desktop computer
and controlling the mains lighting in my den. The existing light switch
is about 2-2.5 metres away from the computer. I envisage a substitute
light switch with a WIFI or Bluetooth controlled dimmer.

Does such a thing exist?

Another Dave

We are told to exercise. Surely a frequent 5 metre round-trip to the
switch would count as such?
--
Dave W