The QWZ-PPE/BE is an intermediate socket that can switch up to 16A. This smart socket can be used to easily switch a connected device on and off. As soon as you plug the smart socket into a normal socket, you can switch the connected device on and off locally using the button on the socket.
Because the smart socket has its own energy measurement and can be easily moved, you can measure the energy consumption of multiple devices in different locations with just a single socket.