Making an electric shower smart

[RemoteSojourner]

Hi,
I have a 10.5KW electric shower in my home with a 50Amp 1 gang double pole switch fitted outside for it.

I wanted to convert this switch into a smart one so I can turn it off remotely when I forget to switch off the shower in morning.

However, I have been unable to find any wifi/zigbee switch that can do this.
The only switch I found was zwave and its 40amp only so not sure if that would suit either. Z-Wave Plus Aeotec Heavy Duty Switch - https://www.vesternet.com/z-wave-aeon-labs-heavy-duty-switch

I would be really greatful for any ideas about this.

 

[Squid]

Is there a Smart Switch available so that I can power off the CSU when I leave the house, preferably on a motion sensor as if I forget it will do it automatically, I have OCD and resetting all the clocks in the house will keep me entertained for hours each day.......... on my return......