Video/Audio Input
Audio Input:   4-ch
Video Compression:   H.265+/H.265/H.264+/H.264
Analog and HD-TVI video input:   4-ch,BNC interface (1.0Vp-p, 75 Ω)connection
Supported camera types:   Support HDTVI input: 8 MP, 5 MP, 4 MP, 3 MP, 1080p30, 1080p25, 720p60, 720p50, 720p30, 720p25
Support AHD input: 5 MP, 4 MP, 3 MP, 1080p25, 1080p30, 720p25, 720p30
Support CVI input: 4 MP, 1080p25, 1080p30, 720p25, 720p30
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 the 1st channel of audio input)
Video/Audio Output
HDMI/VGA Output:   HDMI: 1-ch,4K(3840×2160)/30Hz,2K(2560×1440)/60Hz, 1920×1080/60Hz, 1280×1024/60Hz,1280×720/60Hz,1024 ×768/60Hz
VGA:1-ch,2K(2560×1440)/60Hz,1920×1080/60Hz,1280×1024/60Hz,1280×720/60Hz,1024×768/60Hz
Recording resolution:   8 MP/5 MP/4 MP/3 MP/1080p/720p/WD1/4CIF/VGA/CIF
Frame Rate:   Main stream:
8 MP@12fps, 5 MP@20fps, 3 MP@18fps
4 MP/1080p/720p/WD1/4CIF/VGA/CIF@25fps (P)/30fps (N)
Sub-stream: 
WD1/4CIF/CIF@25fps (P)/30fps (N)
Video Bit Rate:   32 Kbps-16384 Kbps
Stream Type:   Video/Video&Audio
Two-way Audio:   1-ch, RCA (2.0 Vp-p, 1 kΩ) (using the audio input)
Audio Output:   1-ch RCA(Linear, 1kΩ)
Audio Bit Rate:   64kbps
Dual Stream:   Support
Playback Resolution:   8MP/5MP/4MP/3MP/1080p/720p/WD1/4CIF/VGA/CIF
Synchronous Playback:   4-ch
Network management
Remote connections:   32
Network protocols:   TCP/IP, PPPoE, DHCP, Hik-Connect, DNS, DDNS, NTP, SADP, NFS, iSCSI, UPnP?, HTTPS,ONVIF
Hard Disk Driver
Interface Type:   1 SATA Interface
Capacity:   Up to 8 TB capacity for each disk
External Interface
Network Interface:   1; 10M / 100M / 1000M self-adaptive Ethernet interface
USB Interface:   1 USB 2.0 Interface & 1 USB 3.0 Interface
Serial Interface:   1; standard RS-485 serial interface, half-duplex
General
Power Supply:   12V DC
Consumption:   ≤ 15 W
Working Temperature:   -10 oC to +55 oC (14 oF to 131 oF)
Working Humidity:   10% to 90%
Dimensions:   315 × 242 × 45 mm (12.4 × 9.5 × 1.8 inch)
Weight:   ≤ 1.5 kg (3.3 lb)