Spaceclaim of tado on RA valve - replacing Danfoss Eco 2

Hi all,

I have installed Danfoss ECO 2 valves but don't like the functionality. I therefore want to switch to tado instead.

However, I have very limited space to fit the thermostats on my radiators with RA valves.

Can anyone tell me the total installed dimension for the tado system?

Input would be much appreciated. Thanks!