We bought a house with a Honeywell monitored alarm system. I hate proprietary hardware. I wanted the installer pin but the service company would not give it for less than $200 So I opened the case, looked at all of the numbers on the motherboard, tried every 4 digit combination in those numbers, misread one of the numbers, then mistyped what I misread, and correctly guessed the 4 digit numeric Installer code. Then reset the homeowner pin and disabled the comms. I am leet haxor. #homeautomation