H.264 compression,4 channel standalone dvr,support SATA HardDisk, Mouse,USB,network, ... 525Line,60f/s)Video Input4 channel, BNC , 1.0V p-p/75ΩComposite Video Output1 channel, BNC, 1.0V p-p/75Ω ... Monitor Video Output1 channel, BNC, 1.0V p-p/75Ω ... H,150MB/H,250MB/H, 300MB/H,500MB/H, 1~1000MB/H Self-definedPasswordEncrypted by 128-bit Numerical Digits ...