... 4.CIF,HD1,D1 resolution H.264 network DVR equipmentIntroduction1,Support 4CH video,CIF,HD1,D1 resolution ... global positioning and real-time transmission video.4,It can be installed an external GPS tracker. ... is power off suddenly, DVR will stop recording. After restoring power to DVR, it will continue to recording video ... the video link of 4CH SD card mobile DVR with 420TVL cameras. The video is set as ...