Yes, that’s how it is designed.

The Meross Smart Wi-Fi Switch in the Wall (MSS810) is designed to control lights or fans, but it can also be used to control other electrical devices, including blinds, provided they are compatible with the type of switch and the power it can handle. However, it is important to check that the blind switch is compatible with the load capacity and connection type of the Meross switch. A neutral conductor (blue cable) is required for installation, and you must ensure that the blind switch does not exceed the maximum load capacity supported by the switch.

Yes, if you install it in the switch on the "lamp return" side. You'll also need a phase and a neutral for it to work.

Nein. Nur 1 way

Sure that works. If it's a large flush-mounted socket. Technically it is possible, some sockets are too deep and then the receiver has no more room...

No. It is purely an on/off switch.

No, that would be a push-button function. This is a switch. So either switched on or switched off

I have just noticed that the sizes given are wrong. The correct size would be 50x46x19mm. A socket usually offers the following space: approx. 55x55x35mm (HxWxD). In this case it should fit. However, as this is only a guideline and may well vary individually, nothing is guaranteed.