On 03/03/2018 16:42, Broadback wrote:
On 03/03/2018 16:22, alan_m wrote:
On 03/03/2018 11:27, Broadback wrote:
I am finding search engines less and less useful. I am looking for a
timer for my gas fired central heating that has a battery back-up, as
we have fairly frequent power failures here. any suggestions please?
The simpler to set up the better.

Many modern ones have a built in back up battery including

http://www.salus-tech.com/products/d...rs-and-timers/

(Water only or heating and hot water)
Just click on one of the pictures to get the description and a link to
the manual.

http://www.admac.myzen.co.uk/Timer/

Thank you for all your replies, I now just have to decide which is most
suitable for me.

As a broader question to the group, bearing mind that these devices are
often fitted for 10, 15 possibly 20 years or more how long (I mean in
years not hours of a power cut) would the backup battery typically last?

Rechargeable batteries used in radios, drills and laptop computers don't
seem to last anything like this long.

--
Chris B (News)