Moes MS-104-US Switch
Available from:
Aliexpress.com
Manufacturer:
Moeshouse.com
Wi-Fi Module:
Beken
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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.