¼ progressive scan CCD MPEG-4/Motion JPEG full frame (30 fps each) dual stream in VGA Day/Night surveillance with True day/night function Variable gamma function (Easy wide-D) for backlight compensation Free shape and unlimited number of positions for private mask Built-in display mode (LCD1/LCD2/CRT/Custom selectable) Web based setup and viewing tool Password protection and IP address filtering Bi-directional audio communication Trigger input by built-in motion detection and external alarm input Pre/Post alarm buffer of 8 MB Alarm terminal (input x 2 output x 2) 20 simultaneous users unlimited users by multicasting Monitor output for setup MTBF - 42000 Hours (4.8yrs)