This script was used successfully to brute force the installer's code of a DSC PC1616 home alarm system. Will work with many other DSC models. Most likely at least with PC1864. Components needed are ...

DSC PC5900 is a talk/listen-in audio verification module that has up to 4 audio stations. It is compatible with PC1616, PC1832 and PC1864 control panels and can be remotely controlled via touchtone ...

Compatible with PC1864/PC1832/PC1616 control panels (v4.1 and higher). Panel remote uploading & downloading via internet/intranet using DLS IV. Programmable using DLS IV or keypad. Supervision ...