bassel almouie 0 Posted May 2, 2010 please help me what the perfect idea for the power supply and the video signal for 50 m distance between the cameras and dvr. what the ups that j need it for operat the system about 1 hour thank a lot Share this post Link to post Share on other sites
hayden 0 Posted May 6, 2010 You either use local power supply (power near the camera with say few meters) or 24V AC and drop down to 12V DC. Alternatively, use 24V AC cameras. Are you referring UPS powering cameras and DVRs ? Share this post Link to post Share on other sites