EC400 supports 42,000 users data, 200,000 event logs, provides four 7A lock relay outputs, four door sensor input ports, four exit button input ports, eight WG26/34/66 card reader input ports, one TCP/IP communication port. Support operating voltage DC9V-14V, working current < 500mA. The control boards supports all functions marked in bellowing“function list”, support QR code reader .EC400 as four door access control board is a new generation of intelligent network access control products. It uses super network processor and mass memory to realize real network data exchange, high-speed data operation and super large user data management.