[BK7231N] Moes MS-104C-1 - Smart Switch Module Wifi 3 gang

Thank you for config, but please next time use syntax tag with JSON mark so the config can be copy/pasted (it's easier than writing it again from image).

By the way, this switch has a very interesting design. CBU module on extra board.... I haven't seen that kind of board yet.

Those relays also seem tiny, but I think it's justified, considering that they are 10A only.

PS: You can also consider using PowerSave 1 command (in short startup command or something) to make power consumption of BK7231 lower.

Thank you for your help. I made an update to the original post to add the json instead of the image.
I also enabled PowerSave on module startup.
The solution they came up with for the module to be very compact is really interesting.

At least it's the CBU module, so UART1 is easily accessible.
It would be worse in case of CB2L, because CB2L has UART1 pads on back so it would have be needed to be desoldered first before flashing. I had such situation with that bulb (it was WB2L_M1 but still...): https://www.youtube.com/watch?v=2e1SUQNMrgY

I watched the video, it's a lot of work.
So far, I only have flashed CBU and WB2S, both with easy access to all pins.

It's not that hard, the module from video has at least a single row of soldered pads so it can be easily removed with the PB solder+cheap soldering iron+flux trick, without hot air.

Some other modules may require hot air for the easy desoldering.