1.8-Channel Standalone DVR 2.H.264 Algorthm,Pentaplex 3.Support Internal CD / DVD- ... :16Ch Video 8-Channel Standalone DVR AST-DVR0804LBH.264 Algorthm, Pentaplex, Support Internal CD / DVD-RW , USB Backup, SATA portIN:16 Ch Video,4 ... recording, PTZ movement, tour, alarm, e-mail & ftp uploadAlarm Input4/16/16 channel, programmable, ground, manual open/closedTrigger recording, PTZ movement, tour, alarm ...