Recording
                Video compression H.265 Pro+/H.265 Pro/H.265/H.264+/H.264
                Encoding resolution When 1080p lite mode is not enabled: ,4 MP lite/3 MP/1080p/720p/VGA/WD1/4CIF/CIF,When 1080p Lite mode is enabled: ,4 MP lite/3 MP/1080p lite/720p lite/VGA/WD1/4CIF/CIF,
                Frame rate Main stream:,When 1080p Lite mode not enabled: ,For 4 MP stream access:,4 MP lite@15fps; 1080p lite/720p/WD1/4CIF/VGA/CIF@25fps (P)/30fps (N) ,For 3 MP stream access: 3 MP/1080p/720p/VGA/WD1/4CIF/CIF@15fps,For 1080p stream access: ,1080p/720p@15fps; VGA/WD1/4CIF/CIF@25fps (P)/30fps (N),For 720p stream access: 720p/VGA/WD1/4CIF/CIF@25fps (P)/30fps (N),When 1080p Lite mode enabled: ,4 MP lite/3 MP@15fps; 1080p lite/720p lite/VGA/WD1/4CIF/CIF@25fps (P)/30fps (N),Sub-stream: ,WD1/4CIF@12fps; CIF@25fps (P)/30fps (N),Sub-stream: ,WD1/4CIF@12fps; CIF@25fps (P)/30fps (N),
                Video bit rate 32 Kbps to 6 Mbps
                Dual stream Support
                Stream type Video, Video & Audio
                Audio compression G.711u
                Audio bit rate 64 Kbps

    Video and Audio
                IP video input 2-ch (up to 6-ch) Up to 6 MP resolution Support H.265+/H.265/H.264+/H.264 IP cameras
                Analog video input 4-ch BNC interface (1.0 Vp-p, 75 Ω), supporting coaxitron connection
                AHD input4 MP, 1080p 25, 1080p30, 720p25, 720p30
                HDCVI input1080p 25, 1080p30, 720p25, 720p30
                CVBS input PAL/NTSC
                Audio input 1-ch, RCA (2.0 Vp-p, 1 KΩ)
                Audio output 1-ch, RCA (Linear, 1 KΩ)
                Two-way audio 1-ch, RCA (2.0 Vp-p, 1 KΩ) (using the first audio input)
                Synchronous playback 4-ch
                HDTVI input 4 MP, 3 MP, 1080p30, 1080p25, 720p60, 720p50, 720p30, 720p25,*: The 3 MP signal input is only available for channel 1 of DS-7204HQHI-K1, for channel 1/2 of DS-7208HQHI-K1, and for channel 1/2/3/4 of DS-7216HQHI-K1.,
                VGA/HDMI output 1-ch, 1920 × 1080/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz, 1024 × 768/60Hz
                CVBS output 1-ch, BNC (1.0 Vp-p, 75 Ω), resolution: PAL: 704 × 576, NTSC: 704 × 480

    Network
                Remote connections 32
                Network protocols TCP/IP, PPPoE, DHCP, Hik-Connect, DNS, DDNS, NTP, SADP, NFS, iSCSI, UPnP™, HTTPS, ONVIF
                Network interface 1, RJ45 10M/100M self-adaptive Ethernet interface

    Auxiliary interface
                SATA1 SATA interface
                Capacity Up to 10 TB capacity for each disk
                Alarm in/outN/A
                USB interface 2 × USB 2.0
                Serial interface RS-485 (half-duplex)

    General
                Power supply 12 VDC
                Working temperature -10 °C to +55 °C (+14 °F to +131 °F)
                Working humidity 10% to 90%
                Dimensions (W × D × H)315 × 242 × 45 mm (12.4 × 9.5 × 1.8 inch)
                Weights (without HDD)≤ 1.16 kg (2.6 lb)
                Consumption (without HDD)≤ 6 W