DS-7224HQHI-K2 Hikvision 24CH DVR(2HDD)
DS-7224HQHI-K2 Hikvision 24CH DVR is
Hikvision
is a 24-channel, 1080P digital video recorder that supports H.265+/H.265/H.264+/H.264 encoding for the main stream, and H.265/H.264 for the sub-stream of analog cameras. Hikvision DS-7224HQHI-K2 has self-adaptive HDTVI/HDCVI/AHD/CVBS signal input.
Features of this DVR include:

Video/Audio Input
Audio Input:		1-ch
Analog and HD-TVI video input:		24-ch, BNC interface (1.0 Vp-p, 75 Ω), supporting coaxitron connection
Supported camera types:		HDTIV input:4 MP, 3 MP, 1080p30, 1080p25, 720p60, 720p50, 720p30, 720p25 Note: The 3 MP signal input is only available for channel 1/2/3/4. AHD input:4 MP, 1080p25, 1080p30, 720p25, 720p30 HDCVI input: 1080p25, 1080p30, 720p25, 720p30 CVBS input:PAL/NTSC
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
CVBS Output:		1-ch, BNC (1.0 Vp-p, 75 Ω), resolution: PAL: 704 × 576, NTSC: 704 × 480
HDMI/VGA Output:		1-ch,4K (3840 × 2160)/30Hz,2K(2560 ×1440)/60Hz, 1920 ×1080/60Hz, 1280 ×1024/60 Hz, 1280 ×720/60Hz, 1024 ×768/60 Hz
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)
Video Bit Rate:		32 Kbps-6 Mbps
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
Synchronous Playback:		16-ch

Network management
Remote connections:		128
Network protocols:		TCP/IP, PPPoE, DHCP, Hik-Connect, DNS, DDNS, NTP, SADP, NFS, iSCSI, UPnP™, HTTPS, ONVIF

Hard Disk Driver
Interface Type:		2 SATA Interfaces

External Interface
Network Interface:		1 RJ45 10M/100M/1000M 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:		12 VDC
Consumption:		≤ 55 W
Working Temperature:		-10 ºC to +55 ºC (+14 ºF to +131 ºF)
Working Humidity:		10% to 90%
Dimensions:		380 × 320 × 48 mm (15.0 × 12.6 × 1.9 inch)
Weight:		≤ 2 kg (4.4 lb)

Click here to download the datasheet.