On 03/02/2018 22:19, Peter Parry wrote:
On Sat, 3 Feb 2018 16:38:50 +0000, JoeJoe wrote:

Back of the house is facing a park, so want to make sure nobody walking
there is tempted...

I have a false alarm cover/box that matches the real one at the front of
the building. I would like to hang it on the wall at the back, but if
possible, add a flashing LED to it. Something that would be powered by,
say, a 9V battery, with a red LED flashing every 20-30 secs (adjustable
if possible), and the battery lasting a long time (a year? two?).


Any suggestion for a turnkey solution? Alternatively I am happy to
assemble something if given a diagram.


http://cpc.farnell.com/unbranded/42-...les/dp/SR00227


Thanks for that.

It won't be easy to provide it with power other than a battery. In the
description it mentions "...When a permanent 12V supply..." which
suggests that it would probably be too power hungry for a battery.