does anyone know of any motorised or solenoid operated radiator valve that do NOT require a battery and can be run from mains (preferable) or 12-24VDC?

i am far from an expert, but i have seen something described as 2 port actuators, will these do?

i would like to remote control every (conventional) radiator... i do not want underfloor heating.

any ideas or pointers very much appreciated.