Wireless Kinetic Light Switches

Wireless Kinetic Light Switches

Wireless Kinetic Light Switches

Hi

I used one of these Quinetec (not for sale in Germany) light switches in 2020 when I changed a door opening, these were easy to install no wiring or battery required, look smart, after 4 years still working very happy with it.
Now selling on ebay similar unbranded and obviously much cheaper.

Q1. Are electricians in UK installing many of them, are they becoming popular? Any issues with them/ disadvantages?
Q2. Why 433MHZ?
TIA

by yartin

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