PRO42IC: HONEYWELL PRO4200 Professional Series Access Modules Intelligent Controller (IC) for medium to large installations. Two reader interfaces on the board for access control for up to two doors (requires WIN-PAK 4.9 or higher), connection of up to 16 SIO modules in any combination via up to 2 RS-485 buses. Free programming of macros using so-called triggers and procedures; built-in Ethernet converter. Succssor to PRO32IC.