1. 4CH Full D1 Digital Video Recorder Real-time DVR 2. Support a 2TB HDD, with VGA ... 3. RS485, mouse, USB, 4CH Full D1 Digital Video Recorder Real-time DVR FeaturesWith H.264 High efficiency Video CompressionSupport ... (W*D*H)Weight3.5kg 4CH Full D1 Digital Video Recorder Real-time DVR