Need a bit of help, from the oldies like myself perhaps. At one time, when dinosaurs walked the earth, we put our own warning devices together. A sounder, microswitches , battery, and a small sab module. I need these sab modules, many had on board batteries and occasionally timers, but I'm not in a position to the pros and cons. Looked just about everywhere on the net but ..nothing. It would be appreciated if anyone could keep a look out for these little sab mods. I'll buy you a drink when I next see you.