Dave Plowman wrote:

alan_m wrote:

I change my battery in my alarm every 3 years.

Crikey. A decent SLA in such a friendly environment should last a lot
longer than that. Got 11 years out of one car battery.

Some people must have had batteries replaced as I only heard one alarm
last night, when we had a power-cut this summer (windows wide open)
there were several to contend with.

I phoned-in the outage after giving it a couple of minutes (and a couple
of failed attempts at cutting back in) the 105 reporting line
automatically got my postcode from somewhere and recorded the outage,
which appeared on WPD's fault map shortly afterwards, just had a call
back from them to apologise ...