The SR35iA Aperio is the controller for the Aperio readers in an Omnis system. Together with the Entro software the Aperio readers can be configured (time schedules, access groups, security levels…). Communication between Omnis and SR35iA Aperio is done over TCP/IP network using BAPSI protocol with 128-bits encryption. Communication between SR35iA Aperio and Aprio Hub AH30 via RS485 interface. Up to 15 Aperio hub’s AH30 can be connected to same RS485 interface. The SR35iA Aperio comes in three different sizes (reader capacities)‚ 8 readers SR35iA/8, 16 readers SR35iA/16 and 32 readers SR35iA/32. Communication between point of configuration (e.g. Entro PC-client) and SR35iA can be established over RS232 or TCP/IP networks.