In message , mick
writes
On Tue, 11 Mar 2008 16:09:00 +0000, Dave Liquorice wrote:

Does anyone know of a sounder suitable for mains use that won't deafen
people within 10 yards. Ideally all I want is quiet beep 15 sec pause
beep 15s and so on.


This *is* a DIY group... build your own! ;-)

stripboard & soldering iron time!
a dual 555 timer - first half gates the second half at repeat speed.
second half provides the beep and is connected to a piezo speaker.
then just a little power supply.

Masochists could use a PIC chip and piezo speaker with some programming
instead of the dual 555 and components.

Sorry, but it's an unwritten rule of DIY electronics that you HAVE to
have a 555 timer on the board (even if it's not actually connected to
anything)



--
geoff