1.4 ch digital video recorder 2.SATA HDD 3.Support network 4.Control :1. Face plate; 2. USB Mouse; 3.IR remot 5.OEM/ODM 4 ch Mobile phone Network dvr digital video recorder Video Compression FormatH.264Video SystemNTSC / PALGUI OSDYESVideo Input (BNC)4CH BNC input (composite video signal 1Vp-p 75Ω BNC)Video Output (BNC)1CH BNC outputAudio Input/Output1CH audio input,1CH audio output (RCA)Maximum ...