Wi-fi relay with which LED lamps will not flicker, connection to a two-key switch. 

With this type of wi-fi relay, you will not have any problem with flickering LED lights. I'll show you how to install and connect a smart home (Yandex Alice) to the system. I’ll tell you what the differences are from a relay, which does not require a zero to connect, and you’ll also learn some tricks of voice control.