4 Door Access Control Panel Board - Software CD is included - can easily connect to a PC or Network with Ethernet Cable via TCP/IP port - Connect and control Access Readers, electronic door locks, exit buttons, alarms and more For 4 Door Access Control - Software CD is included Connect up to 4 Access Control Proximity Readers Communicate through TCP/IP (Ethernet) 12v DC 1 Year Manufacturers Warranty & Free Life Time Technical Support (US Based at our Location)