They installed these systems in homes in the mid 1950s. This was a deluxe high-tech option.
I have seen homes like this that had a master control panel in the master bedroom as well. So, when you want to turn off all of the lights that the kids left on before bed, you simply turn them all off from one place. I wouldn't mind having this option today with teenagers!
If the system is having problems, post them up, otherwise just enjoy the system.