Is there such a thing as a network connected, external alarm I/O module? I cheaped out when purchasing my NVR and got it without alarm I/Os.
Is there a way to add on module or something to an existing NVR? Well, I'm sure there is but does anyone know or have used any?
I found this... AXIS P8221 Network I/O Audio Module
Is there a way to add on module or something to an existing NVR? Well, I'm sure there is but does anyone know or have used any?
I found this... AXIS P8221 Network I/O Audio Module