When we built our place I had the stables tack room wired for the alarm system I put in the house. There is a separate keypad in the tack room and that stays armed even when the house is not. I also installed a beam smoke detector from one side of the stables to the other. It is always armed. If either goes off the sirens in the house go off. Since I had smoke detectors installed with the house system there are inside and outside sirens that you can hear for miles. If you use a DSC brand system, which most do, they can do a lot with one panel and multiple keypads instead of installing 2 systems. One Cat5e wire buried from the house to the stables runs the keypad, door switch and smoke detector.