Thank's Buildersmate.
The TVR's I have are "ECOCAL" made by Altecnic.
I was hoping to find a system, something like, motorised valve fitted to rad. & controled by a stat. set away from the rad., in each room.
I expect to pay much more for such a system.
How can I expect good control of room temp. when sensor is so close to rad. & so near to the floor as TVR's are.
Thank's again Buildersmate.
I am going to try one of those,I hope drayton are better than my current one. The 4 degrees set back facility sounds good.
I found a TVR with a remote sensor on the drayton site, but Mrs dunr (36.24.35) would object to the capillary tube up the wall !
Regards