4 Ch D1 Real-Time H.264 DVR . - H.264 Video Compression - Video Input: 4CH– Video Output: 1Monitor, 1VGA - Audio Input : 2Ch, Audio output : 1Ch, 2-way audio - Recording Compression : D1CIF, - Network protocal TCPIP, RJ-45. IE, Client Software. - Support Smart phone - Remote : Mouse, IR Remote control. - Internal Storage : SATA x 1 support 2T per HDD - Power Supply : DC 12V - Dimension 3 0 0 x 270 x 57mm