The AHD Series all use the same driver and support SDDP so Control4 auto discovers the DVR.
There are two drivers available.
This is for control of the DVR via IP. Use the HDNI output to a TV and control
the unit via your C4 remote/panel. Features include channel selection, multi
view selection and playback
This driver allows you to add the DVR channels individually to the Control4
security tab, so they can be viewed on C4 panels.
These drivers are available for download here.