barking dog schematic

Looking for a barking dog door knob security alarm which is battery friendly.
(Found a 556 that needed 15 V and older components.)

do you mean something like this
http://www.abra-electronics.com/products/catalog/Velleman-K2655-Electronic-Watchdog-Kit-p-39.html

perhaps coupled with this:
http://www.bakatronics.com/shop/item.aspx?itemid=527 - perhaps needing modificaton to connect some kind of relay

Im no expert, i cant even find the right lights and power pack to set stuff up... but these things came to mind when i read you post