Veeeeery far. About 1,300 miles. I'm in the Canary Islands, which is very nice for some things but has some drawbacks too
Ok, so it seems that I shouldn't base my alarm on video motion detection then. Fine, I'll still want to have cameras and a DVR for video surveillance and I'll add to the system some actual motion or perimeter sensors. Those should be fairly inexpensive. Can I connect them to the DVR? Is that what the RS485 interface is for? And then connect the DVR output alarm channel to the alarm? Or do I connect the motion/perimeter sensors to the alarm? I guess my confusion is that I don't understand how these devices interface with each other.
Thanks for the responses