Greetings, when I bought my home new it came with the DSC PC1555MX system and Power Series 433 keypad. We used it for the first oh, 16 years but, eventually it started to develop an intermittent beep that I never could duplicate or diagnose to eliminate. It would just start doing it and then I just eventually unplugged it and removed the battery waiting for the day to come that I could devote more attention to it. Now that time has come as I continue to harden the property with cameras and generator. I see that board can be bought new and used still but, it’s old enough now (20+ years) that I would prefer to stay away from that. At one time I did try programming it with their software and a phone connection to the modem on a PC and that wasn’t impressive at all so, I am not inclined to replace with another DSC unless there is some compelling reason. Possibly a newer design with Internet connectivity, additional bells and whistles, etc?

I have pictures but, reddit won’t let me post them even though I am over the karma minimum and most of you probably have seen it before anyway. They seem to be pretty common around here.

Therefore, I am open to suggestions on the easiest path to accomplish this using the existing hardwire already in the home. Door switches, motion detection, sirens, etc. I’m somewhat handy and would prefer to do what I can on my own. Any help would be appreciated. TIA.