Inside the link, on the first page, you will see the inside of an OpenWB Duo, on their board.
On Youtube you can find a detailed video of OpenWB, with phase switch, but in german.
As a linux developer and part owner of a software company, I know something about open/closed source.
This is not about the software, is a stupid (my opinion) move to hide informations = how HW parts are connected.
It took me a while to find schematics and pictures for Simple-EVSE, EVSE-WIFI, OpenWB and OpenEVSE.
Almost all the info was not very meticulously wiped in time from the servers and with some luck, I've made a backup.
As 100% of the hardware parts are available in the store, I can't understand the secret policy.
98% of the customers do not have the courage or knowledge to make an EVSE box for a costly car.
The other 2% could easily replicate the hardware.
Is not practical, there are totally different customers.
This is why I do not understand the policy of no pictures.
Is only a matter of time until someone is sick of this non-sense and will make a detailed article about the inside of OpenWb Duo or SmartWB. Google is not your friend.
As I've made for myself 3 boxes of EVSE WIFI 1.x as a hobby only, I think I know how SmartWB works.
No need for pictures.
Is really not so difficult to read the public documentation and piece together that except the EVSE-WIFI 2.0, all the parts can be bought at a fraction of the costs from Aliexpress.
Some may even clone the device, but without certification, who would buy it? See, really no competition.
Also, most informations about EVSE boxes is german only (except OpenEVSE).
P.S. Most electricians are "cable monkeys".
Rarely they do understand how things works.