1,4 ch port DVR standalone DVR 2,CMS software /3G/ mobile monitoring 3, ... , Russian, French, Spanish, etc. Specifications:VideoInputBNC×4,(1.0Vp-p,75Ω)CVBS OutputBNC×1,(1.0Vp-p,75Ω),PAL 704*576,NTSC 704 ... *480VGA OutputVGA×1, Resolution 1024*768AudioInputRCA×1OutputRCA×1RecorderVideo/Audio CompressionH.264 Main Profile/ ...