Security Dialer

Important notice - This was a project I worked on many years ago.  I do not have a source for any more of the dialers.
Production Description:
    This unit is a security dialer that calls up to three preprogrammed numbers and plays back a user-recorded message.
Designed at:
    Tandy Electronics Design
Sold at:
    Radio Shack as 49-434, later as 49-434A
    Electronics Design - Dan Staudacher
    Firmware Design - Dan Staudacher
    Mechanic Design - Chuck Schmucker
    Initial Design - Doug Deeds
    Modifications for added functionality - Doug Deeds