There are cheapest (less than 5 EUR) smart sockets I bought recently. I found only similar to these described here. If there are same as these, moderators can delete the post.
Body is absolutely the same as already described here sockets, but inside there are small differences.
Controller is T34 (I don't know what it is). Energy meter is BL0937. They work with Smart Life and Tuya. I'll try later to connect them to my Home Assistant.
On the other side of the socket is power supply, which is not so interesting.
On the back side of PCB there is mounted relay which fits in the Shuko plug.
Boxes:
Front PCB:
Rear PCB:
Controller and meter chips:
Body is absolutely the same as already described here sockets, but inside there are small differences.

Controller is T34 (I don't know what it is). Energy meter is BL0937. They work with Smart Life and Tuya. I'll try later to connect them to my Home Assistant.
On the other side of the socket is power supply, which is not so interesting.
On the back side of PCB there is mounted relay which fits in the Shuko plug.
Boxes:

Front PCB:

Rear PCB:

Controller and meter chips:
