I'm looking to source some motorized radiator valves. The difficult bit is that I do not want any proprietary company system. Well, not unless I can hack it to do as I please. Just valves I can talk to with my own code.

Ideally Wifi, but I realise as they are battery operated it's more than likely going to be RF. This is fine as long as I can find documentation on the protocol and then emulate it from a microcontroller or raspberry PI with an RF transmitter.

So what are my best options?