ZKTeco 4-door 1-way Controller US-C3-400-PRO

4-Door Controller Stores 30,000 cards and 100,000 events Reader Ports: 4 (26-66 bit Wiegand Format Supported) Communication: TCP/IP, RS485 Input Ports: 12 (4-exit buttons, 4-door sensors, 4-Aux Inputs) Output Ports: 8 (4 FORM-C Relay Output for lock) 4 Aux FORM-C Relay Output) Weight: 3 lbs. Shipping Box Size: 10″ x 7″ x 3″