H.264 compression,4 channel standalone dvr,support SATA HardDisk, Mouse,USB,network,IE ... 625Line,50f/s), NTSC(525Line,60f/s)Video Input4 channel, BNC , 1.0V p-p/75ΩComposite Video ... , 1.0V p-p/75ΩMonitor Video Output1 channel, BNC, 1.0V p-p/75ΩVGA Interface1 VGA, ... 500MB/H, 1~1000MB/H Self-definedPasswordEncrypted by 128-bit Numerical Digits with 2-Level Password ProtectionPower SupplyDC12V 3. ...