Radiator valves and virtual devices

Hi

I am planning on changing my radiator valves to z-wave controlled ones. The ones I have found so far need to be associated with a z-wave room thermostat for set point comparison.

I was wondering if it is possible to create a virtual device in Z wave that acts as the room thermostat rather than have physical ones in each room.

The I can use automation logic to set the set point etc...

Cheers

James