Sonoff Basic (R4) WiFi + Bluetooth okosrelé - OkosOtthon Bolt
How to use SONOFF Wi-Fi Wireless Smart Switch - YouTube
SONOFF Basic R2 10A Smart WiFi Wireless Light Switch, Universal DIY Module for Smart Home Automation Solution, Works with Amazon Alexa & Google Home, Compatible with IFTTT, No Hub Required (1) :
Sonoff Basic (R4) WiFi + Bluetooth okosrelé - OkosOtthon Bolt