License Order Models HIKVISION NVR INTEGRATION AX-HIK-L1 2 cameras/channels, 1NVR AX-HIK-L2 4 cameras/channels, 2 DVRs AX-HIK-L3 9 cameras/channels, 4 DVRs AX-HIK-L4 16 cameras/channels, 8 DVRs AX-HIK-L5 Unlimited/channels, 12 DVRs DAHUA NVR INTEGRATION AX-DAH-L1 2 cameras/channels, 1 DVR AX-DAH-L2 4 cameras/channels, DVRs AX-DAH-L3 9 cameras/channels, 4 DVRs AX-DAH-L4 16 cameras/channels, 8 DVRs AX-DAH-L5 Unlimited cameras/channels, 12 DVRs Supported SDK Versions Hikvision - 5.3.2.15 Dahua - 3.4.8.27787