A good smart light switch that wroks on radio frequency and is a good one to use
Home automation is not a luxery but it can be too, though its mainly about making things and routinique task easier and more efficient
To convert your house to a smart one you should teach how to do and orginize things in your daily life, like coffee, blind, Security and more
Remotely using this relay switch turn ON/OFF any connected 220v appliance all you need is internet connectivity and a smart phone to control and automate it