Chris Huff wrote in message ...
>...but I don't
>recognize the 8-pin DIP IC. That and the other components don't look
>like they belong on a power-supply board. There is something labelled
>"door"...maybe a trigger for a garage door opener, or an alarm for when
>a door gets opened, or a doorbell. The last two make the most sense...


It appears to be a doorbell.  According to the Chip Directory, the 2811 IC
is:

2811    HT-2811    sound    Door Bell, Ding Dong    Holtek*

(The Chip Directory is at
http://www.xs4all.nl/~ganswijk/chipdir/index.html).
--
Mark

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