I have a person that is communicating with me about them having a SimonXT Alarm from ADT and I was wondering if the Alarm Keypad and devices with it will work? I was looking for a Siren repeater for cheap and this Keypad has a siren on it and I could put it in my upstairs. I am including a pic of it.
http://i57.tinypic.com/156en4o.jpg