Main Processor:Embedded processor Operating system:Embedded LINUX OSD:Camera title, Time, Video loss, Camera lock Privacy Masking:4 rectangular zones (each camera) Backup Mode:USB Device/Internal SATA burner/Network Video Detection:Motion Detection, MD Zones: 396, Video Loss & Camera Blank Camera Image Sensor:1/4'' 1Megapixel CMOS Internal HDD:1 SATA port, up to 6TB Max. IR LEDs Length:20m, Smart IR Type:Dahua 8 Channel Tribrid 720P DVR Kits Show More