HDView 9CH Tribrid: 8 Channel DVR + 1 Channel NVR, HD 4-in-1 (TVI/AHD/Analog/IP) DVR Kit, with 1TB HDD, 4 x 2.4MP 1080P Infrared Security Cameras Package System, Surge-Protection DVR Supports: 9CH Tribrid: 8 Channel DVR HD 4-in-1 (TVI/AHD/Analog/IP)+ 1 Channel 3MP ONVIF IP Cameras 4 x 2.4MP 1080P Infrared metal outdoor/indoor 4-in-1 (TVI/AHD/Analog/CVI) cameras, mount on ceiling or wall Audio In/Out: 1CH/1CH (2 way audio), Video Output: HDMI, VGA Commercial Grade Phone App, 1TB Hard Drive Installed [Recommend Same Series HDView Brand Camera] P2P QRCode Scan, CMS software and DDNS Server, Live Time Tech Support (Please contact us from our amazon store page)