4-channel Stand Alone H.264 DVR 2 channel alarm input, 1 channel alarm output Details:1. H.264 Compression2. Adjustable 5-level ... SupportedControl WayUSB Mouse, Remote Control, PTZ, Camera and RS485 x 1 SupportedBackupUSB, CDRW, DVDRW and Network SupportedResolutionDisplay: ... , 1000G more)Bitrate5 Levels: 150MB/H, 200MB/H, 250MB/H, 300MB/H, 1~1000MB/H Self-definedPasswordEncrypted by 128-bit Numerical ...