VPDVRe7004 4-Channel Digital Video Recorder,120G,PAL/NTSC,up to 8 Harddisks VPDVRe7008 8-Channel Digital Video Recorder, 120G,PAL/NTSC,up to 8 Harddisks VPDVRe7016 16-Channel Digital Video Recorder,120G,PAL/NTSC,up to 8 Harddisks