This network ready access control panel has all the features you need in one package. Interface with up to 16 door control boxes and eliminate expansion boards and external network controller hardware. Compact design On-board network interface Built-in UPS function w/rechargeable battery support Supports 15,000 users Programmable card expiration supported 11,000 event memory 16 RS485 readers supported Serial interface: RS485, 9600 baud, N, 8, 13 3 connections, 2 for readers, 1 for PC Anti-pass back supported with ECL-ACC900/950/995 Auto diagnostic: No user intervention necessary Dynamic door assignment supported Emergency door release supported 2 Wiegand readers supported Scheduled door release supported Scheduled door arming supported 63 Time Zones 255 door groups 120 programmable holidays Request to exit supported Relay inputs: 4 (expandable to 16), 3A Relay outputs: 4 (expandable to 16), 3A Voltage: 9-24VDC variable auto detection Power: 2.5 watts Temperature/humidity: -10°C – 50°C (14°F – 122°F) @ 0-90% non-condensing Dimensions: 180mm x 231mm x 62mm (7.09″ x 9.09″ x 2.44″)