Uninstalled my Samsung SHR-5080 CCTV DVR from my business when I closed it years ago. Now I want to use it for residential purposes. I have 5 Honeywell HD50 cameras (night vision and motion detection) and a few microphones. In addition to video & mic, I would like some sort of alarm system for motion detection at night. There is an alarm terminal set in the rear of the unit, with ports to connect many wires, some input, some output. Unfortunately, the user manual gives very little info about the alarm function. It says you can connect a RS-485 device, for example to control PTZ cameras. I dont have and dont need PTZ cams, but I do want to be alerted to motion in the middle of the night. Is this possible, using the motion sensors in my cameras? What additional equipment would I need? I would ask Samsung, but this is now a discontinued unit, and they dont support it any more. Thanx in advance.