You just need to plug the unit into the AC power supply. Connect the cable to the device and tighten the nut on the cable connection port. For a complete tutorial, you can see the manual in the purchase package.

The Smart breaker capacity is 10A, so the capacity is sufficient. But it is not recommended because of the possibility of short circuit due to steam/water splashes. It is recommended to use the Smart Plug device only.

For all devices that have input and output cables such as connecting plugs, with a maximum power of 2200 watts.

No, Smart breaker functions as a fuse only. If it is above 10A then the electric current will stop flowing.