ADT SafeWatch Pro 3000 System - Can it be 're-used'?

Thank you @rlkoshak … you always have very valuable information :).

Here are some pics of the various ADT components in my house:

  1. Typical Motion Sensor (PIR ?)
  2. Control Box, by the garage door
  3. Typical Door Sensor
  4. Master Circuit/Panel, in the basement

My initial thinking was to find a way to hack into the board/controller but that will likely be a frustrating activity. At the very least, I think re-using the sensors might be the more ‘reasonable’ approach. Yes, I also have few RPIs and maybe now is the time to put them to good use.