On Monday 18 November 2013 18:25 Andy Burns wrote in uk.d-i-y:

Chris J Dixon wrote:

Jon Connell wrote:

So reading into these wifi thermostat things, I learned that some
of them can also control wireless TRVs

I have a couple of these
http://www.conrad-electronic.co.uk/c...-Radio-Exhaust

So these things replace the TRV head and depress/release the plunger
automatically several times a day, all from coin cells? How long do the
batteries last?

AA's usually and 1-2 years claimed.

--
Tim Watts Personal Blog: http://squiddy.blog.dionic.net/

http://www.sensorly.com/ Crowd mapping of 2G/3G/4G mobile signal coverage