This I/O Box supports 16 in/out sensor relays and is one accessory that provides a big advantage to users. The IO Box also supports 3 kinds of interfaces when connecting to an AVerDiGi NV/SA DVR and is expandable to 128 in/out sensor relays. It is easy to use and allows you to identify sensor/relay status via small LED lights.
Must be used with NVD4AUEXT
Pros: Average product. Easy to use.
Cons: Very pricey. A lot of money for a hunk a plastic and a cable. Should be bundled with Audio card for better pricing.
Other Thoughts: More expansion capabilities.
Close