Rod Speed wrote:

Fredxx wrote
Rod Speed wrote

It uses kinetic energy to send a wifi signal to the base.

You were doing well until this point.

That's what it does. No battery no wires.
https://www.amazon.co.uk/Philips-Per...Synthetics/dp/
B0748MQWP3/ref=dp_ob_title_light

I'd prefer to call it mechanical rather then kinetic energy, without
further information. But perhaps he was suggesting that Wifi was not
really an appropriate radio protocol for the purpose?

--

Roger Hayter