In article ,
Dave Liquorice wrote:
Ah - I don't know my BSs. Doesn't seem to have made any difference
to the number of false alarms round here, though.

DIY alarms probably aren't fitted in accordance with the standards or
even with regard to correct siting of PIRs etc.

There are two offenders near me which go off at least twice a month. And
both are pro installations.

--
*What was the best thing before sliced bread?

Dave Plowman London SW 12
RIP Acorn