1~4 channel wireless 3G bus DVR 1.H.264 format 2.1~4CH video input ... 4.CIF,HD1,D1 resolution 1~4 channel wireless 3G bus DVRIntroduction1,Support 4CH video,CIF,HD1,D1 resolution up to ... Shenzhen Security&protection Industry Association 1~4 channel wireless 3G bus DVR