On Sun, 25 Nov 2007 08:45:12 -0000, "Autolycus" wrote:

I wonder how long the
batteries last in the actuators? These would be an interesting
alternative to trvs in a system controlled overall by one roomstat, but
I can't at the moment see how to use a number of them to links as OR
inputs to call for heat from the boiler.

Wot they say, deep in the spec sheet: two years in the actuator, one year in the
wall stat -- pair of AA batteries in each.

http://www.conrad.de/goto.php?artikel=617501

has two room stats, controlled and programmed with a further controller, which
can also switch power and control dimmers by radio...

And the cotrollers do degrees Fahrenheit:-)



Thomas Prufer