Four-door Two-way by RS485 One-way by Wiegand Support Lastest ZK software, ZKBiosecurity (Web base software) ID card capacity:60,000 Finger capacity: 20,000 Log Capacity: 100,000 Communication: RS485, TCP/IP Flash Memory: 256MB RAM: 128MB Numbers of readers supported: 12 o (8 RS-485 Reader, 4 26-bit wiegand reader)