After a serious incident at my parents home when my dad fell ill, I'm looking at setting up a form of panic alarm at their home, nothing major, just a button upstairs and a button downstairs with a small siren or alarm bell ringing outside on the wall and a light coming on.
Does anyone know where I can get hold of something like this, or if not, would anyone know how I can actually rig one up by making one? I'm thinking along the same prinicples as a door bell, nothing too flash, just something simple and basic, but something that will get the neighbours attention for help.
Any help on this will be appreciated.