The AAN-4 is the latest product from AAN series controllers. The AAN-4 is complete 4-door controller with downloadable database and RS-232/RS-485 or TCP/IP communication. Full stand-alone operation with complete database redundancy is available when communication with the host PC is interrupted - maintaining cardholder, reader mode, time zones and access level integrity. Readers and alarm inputs are connected directly to the AAN-4 controller. No reader interface is required.The AAN-4 supports all major reader technology (proximity, biometrics, bar code, infrared, long range infrared) with the capability of having different type readers at each port and up to 8 different facility or site codes.The AAN-4 provides each reader with 2 auxiliary outputs, which can be mapped via the software to perform time or event activated functions. If high security is required, the ADA-10/11 can be used for all outputs. Up to 4 ADA-10/11 digital encoders are supported by the AAN-4.