So this morning I found out that one of my Adt-1's was not working, so I used the power cord from the second one to see if it was the cord that was bad or the ADT itself. Good news is the box works, bad news is it appears to be the power cord that is broken. I am wondering is there anyone who would be willing to sell a power cord for it, or perhaps point me to a power cord that works with it instead.
I've never seen the same cord on anything. It's almost definitely a proprietary cord. Maybe you'll have some luck on ebay or something? That or use the tip you have and try to pin it out with another power supply?