I'm attempting to rebuild a security system for a school department, and i'm stuck trying to find the best way for the main controller to communicate with the alarm panels (the panels with keypads and LCDs that are used to arm/disarm the system) that will be by each entrance. I will be replacing eve…

Alarm panel communication options

system April 13, 2014, 2:16am 6

I don't know if this is any help but I found this link

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