swissmorgs

What do I need to look out for? Can I just replace the room stat, providing it has the same volts/amps?

Hi, My water based underfloor heating has individual room thermostats in a rooms. The room thermostats are a very primative dial-type and I would like to update/upgrade to something that : - has a digital display - shows the temp in each room - is powered by the mains, i.e. no batteries - is reliable and has a good reputation/history Nice to have: - possibly programmable - has some smart element to, accessible remotely I'm unsure what I need to look out for when replacing the existing roomstats. Can I just simply swap them out ensuring that the voltage is correct, or is there something else I need to be aware of, e.g. compatibility with the actuators? Photos attached of the existing stats faceplate, internals of stat and actuators. Thanks in advance.

Originally from the UK and have been fortunate to live in Australia and now Switzerland. An enthusiastic DIYer/renovator. Love a good project and generally fixing and updating stuff. Bought a house here from the 1950's and carried out a full renovation.