On 14/10/2020 10:12, Dave Liquorice wrote:
On Wed, 14 Oct 2020 09:21:55 +0100, No Name wrote:

In my case, I have 4 CO alarms, 2 heat detectors and 10 Smoke detectors
all mains powered and interlinked.

16 devices, ouch at say 7 W each 112 W. 980+ kWHr/year or best
part £150/year. 5 W each is still £100/year...

Why 7W per device? A battery powered smoke or CO2 detector alarm can
run for over a year on a single PP3 battery. BUT Possibly only a few
hours if the alarm was continually sounding. Is the specification for
you mains powered units a maximum of 7W (when in alarm mode) and much
much less in standby detect mode.


--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk