Choice of Readers: 
Support full range of card readers. ZK KR-Series readers are stylish and waterproof. C3 supports any wiegand-output reader, including HID Prox, iClass, and XceedID Multi-Technology.

Lowest Total Cost of Ownership:
upgraded without any advanced tools. New features can extend and expand the value of your investment 

More than Door Control :
Access additional control and interface. After programming, auxiliary relays can be functioned as lights, alarms and intrusion detection panels. Extra locking devices or gate controllers can be accessed.