Moes MS-104 Switch
Available from:
Aliexpress.com
Alza.de
Manufacturer:
Moeshouse.com
Wi-Fi Module:
Beken
Try to avoid similar devices from other sellers using same images and descriptions!
the chip is BEKEN BK7231QN40 (and not ESP)
This device can be used if the Beken/HLK-B30 WA2 is replaced by an ESP8266 board as detailed in this discussion.