4 Channel DVR  HD-TVI Ver. 3.0, Compatible with P2P 

4 Channel HD-TVI Video Recorder
Support Live View, Storage, Playback up to 4 HD-TVI / Analog / Analog HD Cameras+ 1 IP Camera
Up to 1080P (1920x1080) HDMI Video Output
Efficient Mode Recording : 960 x 1080 @30fps

CVBS Output

1 SATA up to 6TB HDD

H.264/H.264 Zip+

HD-TVI DVR

8 Channel DVR HD-TVI Ver.3.0 , Compatible with P2P

8 Channel Digital Video Recorder - Efficient
Support Live View, Storage, Playback up to 8 HD-TVI / Analog / Analog HD Cameras + 2 IP Cameras
Up to 1080P (1920x1080) HDMI Video Output
Efficient Mode Recording : 960 x 1080 @30fps
CVBS Output
2 SATA up to 6TB each HDD
H.264/H.264 Zip+, Support H.264+
                                                            Supports HD-TVI, AHD, Analog, IP Camera
                                                            HDMI, VGA and CVBS output up to 1920x1080P Resolution
                                                            8CH 1080P@30fps (1080P Efficient Mode) 8CH 1080P@10fps

16 Channel DVR HD-TVI Ver.3.0 , Compatible with P2P

HD-TVI H.264 DVR, Dual-Stream Video Compression
Supports HD-TVI, IP, Analog Cameras
Full Channel 1080P@15fps, 720P@30fps Recording
HDMI and VGA output up to 1920×1080P Resolution
Long Transmission Distance Over Coax Cable
Supports up to 16CH Simultaneous Playback

24 Channel DVR HD-TVI

24 Channel Tri-brid Digital Video Recorder
Analog & HD-TVI Video In: 24CH
IPC Input: Up to 8CH 1080P@30fps
Video Output: VGA/HDMI up to 1080P
Playback Channel: 24CH
Audio In/Out: 4CH/1CH, RCA
Alarm In/Out: 16/4
                                                            Network: 10/100/1000M
                                                            Storage: 4 SATA up to 24TB
                                                            eSATA: 1
                                                            USB: 3 USB 2.0
                                                            PTZ: 1 RS485
                                                            Support POS #: 8