JANUS Intelligent Door Controllers (IDC-485) can be connected together with up to 32 IDC nodes forming a JANUS comms line.
2 or 4-wire data-cabling interconnects the IDC's and a RS232 or USB comms line header connects the entire comms line directly into a main JANUS PC/server. Alternatively, a TCP/IP comms line header, an ethernet converter, connects the comms line via a private or corporate network infrastructure.
Any number of JANUS comms lines can be installed. No matter how small or large, the comms line header is the only variant in the system design. No other controller, reader interface, or hierarchical processor is required.