1.Standalone DVR 2.4-Channel Standalone DVR H.264 Algorthm, Pentaplex 3.Support Internal CD / DVD-RW 4.USB Backup Standalone DVR AST-DVR0404LN 4-Channel Standalone DVR H.264 Algorthm, Pentaplex, Support Internal CD / DVD-RW , USB Backup, SATA portIN:16 Ch Video,4 Audio;OUT:1 VGA, 2 BNC,1 Matrix,Loop,1 AudioRecording Frame Rate: 400 Frames Per Second at CIF Resolution , AC 110-260VMain ...