Hikvision 4 Channel DVR DS-7100 Series

Video/Audio Input
Audio Input:|1-ch
Video Compression:|H.264,H.264+
Analog and HD-TVI video input:|4-ch BNC interface (1.0Vp-p, 75 Ω)
Supported camera types:|Support HDTVI input: 1080P/25Hz, 1080P/30Hz, 720P/25Hz, 720P/30Hz,
Support AHD input: 720P/25Hz, 720P/30Hz,
support CVBS input
Video Input Interface:|BNC (1.0 Vp-p, 75Ω)
Audio Compression:|G.711u
Audio Input Interface:|RCA (2.0 Vp-p, 1 kΩ)
Two-way Audio:|1-ch, RCA (2.0 Vp-p, 1 KΩ) (using audio input)

Video/Audio Output
HDMI/VGA Output:|1920 × 1080 / 60 Hz,1280 × 1024 / 60 Hz, 1280 × 720 / 60 Hz, 1024 × 768 / 60 Hz
Recording resolution:|When 1080p Lite mode not enabled: 720p/WD1/4CIF/VGA/CIF;
When 1080p Lite mode enabled: 1080p lite/720p/WD1/4CIF/VGA/CIF
Frame Rate:|Main stream:
When 1080p Lite mode not enabled:
For 720p stream access: 720p/WD1/4CIF/VGA/CIF@25fps (P)/30fps (N)
When 1080p Lite mode enabled:
1080p lite/720p/WD1/4CIF/VGA/CIF@25fps (P)/30fps (N)
Video Bit Rate:|32 Kbps ~ 4 Mbps
Stream Type:|Video/Video&Audio
Audio Output:|1-ch RCA(Linear, 1kΩ)
Audio Bit Rate:|64kbps
Dual Stream:|Support
Playback Resolution:|1080p lite/720p/WD1/4CIF/VGA/CIF
Synchronous Playback:|4-ch

Network management
Remote connections:|32
Network protocols:|TCP/IP, PPPoE, DHCP, Hik Cloud P2P, DNS, DDNS, NTP, SADP, SMTP, NFS, iSCSI, UPnP™, HTTPS

Hard Disk Driver
Interface Type:|1 SATA Interface
Capacity:|Up to 6 TB capacity for each disk
External Interface
Network Interface:|1; 10M / 100M self-adaptive Ethernet interface
USB Interface:|2 USB 2.0 Interfaces

General
Power Supply:|12V DC
Consumption:|≤ 8W
Working Temperature:|-10 ºC ~+55 ºC (14 ºF ~ 131 ºF)
Working Humidity:|10% ~ 90%
Dimensions:|200 × 200 × 45mm (7.9 × 7.9 × 1.8 inch)
Weight:|≤ 0.8 kg / 1.8 lb(without hard disks)