Burglar alarm-delay and way to deactivate

[MrTrololo]

alarms in buildings in real life won't activate instantly before it happens it gives (at least in case known by me from real life) short "beep" sound warning and you would have around 30 seconds to act somehow, you gonna have to either leave area and hide before swarms arrive with additional 30 seconds OR to deactivate alarm via control panel by entering correct password, incorrect one will trigger alarm instantly, it would be located near entrance doors, zombies near buildings would have codes written on paper sheets, in addition at least some builings should contain signs that warns about alarm system

[LLcraigJ]

Can confirm. This gives authorized people a chance to enter the code to deactivate the alarm. I can't speak to the popularity and workings of 90's alarm systems in KY though.