There is Power meter function in those sockets. I live in country with unstable voltage. I have Air Conditioner connected through the P115 socket and it works great. Unfortunately I can't see the real voltage. When voltage drops below 150 volts, I would prefer not to switch on AC.

I also have Home Assistant node, so, have those sensors data (voltage and current) would be awesome. Now I have to use additional unnecessory DIY solution for this. It is quite annoying, knowing the sensor is already built into the socket.