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Technical Specifications

Hikvision DS-7700NI-K4/P Series NVR

The Hikvision DS-7700NI-K4/P Series is a professional network video recorder designed for multi-camera IP surveillance systems that require high-resolution recording, integrated PoE connectivity, large local storage capacity, and flexible video output.

Available in 8-, 16-, and 32-channel configurations, the series supports IP cameras up to 12 MP, H.265+ compression, HDMI output up to 4K, four SATA hard drive interfaces, advanced camera analytics, and Hik-Connect network management.

With independent HDMI and VGA outputs, synchronous multi-channel playback, Gigabit Ethernet, and support for specialized camera functions such as line crossing, intrusion detection, heat mapping, ANPR, and people counting, the DS-7700NI-K4/P Series provides a flexible recording platform for larger surveillance installations.

Key Features

  • H.265+, H.265, H.264+, and H.264 video compression formats
  • 8-, 16-, or 32-channel IP camera input depending on model
  • Supports IP camera resolutions up to 12 MP
  • Decoding up to 1-channel at 12 MP, 2-channel at 8 MP, 4-channel at 4 MP, or 8-channel at 1080p
  • HDMI video output up to 4K resolution
  • Independent HDMI and VGA video outputs
  • Four SATA interfaces for surveillance hard drives
  • Supports hard drives up to 10 TB per disk
  • 8- or 16-channel synchronous playback depending on model
  • Integrated 8- or 16-port PoE network interfaces depending on model
  • IEEE 802.3af/at PoE support
  • Gigabit 10/100/1000 Mbps Ethernet network interface
  • H.265+ compression can reduce storage requirements by up to 75%
  • Stream-over-TLS encryption support for more secure video transmission
  • Supports multiple VCA events
  • Supports compatible camera smart functions including motion detection, line crossing, intrusion detection, heat map, ANPR, and people counting
  • Hik-Connect support for network management
  • Two-way audio support
  • Alarm inputs and outputs
  • RS-485 and RS-232 serial interfaces

Available Models

DS-7708NI-K4/8P
8-channel NVR with 8 PoE network interfaces
DS-7716NI-K4/16P
16-channel NVR with 16 PoE network interfaces
DS-7732NI-K4/16P
32-channel NVR with 16 PoE network interfaces

Video & Audio

IP Video Input — DS-7708NI-K4/8P
8 channels
IP Video Input — DS-7716NI-K4/16P
16 channels
IP Video Input — DS-7732NI-K4/16P
32 channels
Maximum IP Camera Resolution
Up to 12 MP
Incoming Bandwidth — DS-7708NI-K4/8P
80 Mbps
Incoming Bandwidth — DS-7716NI-K4/16P
200 Mbps
Incoming Bandwidth — DS-7732NI-K4/16P
256 Mbps
Outgoing Bandwidth
160 Mbps
HDMI Output
1-channel: 4K (3840 × 2160) at 30 Hz; 2K (2560 × 1440) at 60 Hz; 1920 × 1080 at 60 Hz; 1600 × 1200 at 60 Hz; 1280 × 1024 at 60 Hz; 1280 × 720 at 60 Hz; 1024 × 768 at 60 Hz
VGA Output
1-channel: 1920 × 1080 at 60 Hz; 1280 × 1024 at 60 Hz; 1280 × 720 at 60 Hz; 1024 × 768 at 60 Hz
Video Output Mode
Independent HDMI/VGA output
CVBS Output
N/A
Audio Output
1-channel RCA, linear, 1 KΩ
Two-Way Audio Input
1-channel RCA, 2.0 Vp-p, 1 KΩ, using the audio input

Decoding & Recording

Decoding Formats
H.265 / H.265+ / H.264 / H.264+
Recording Resolutions
12 MP / 8 MP / 6 MP / 5 MP / 4 MP / 3 MP / 1080p / UXGA / 720p / VGA / 4CIF / DCIF / 2CIF / CIF / QCIF
Synchronous Playback — DS-7708NI-K4/8P
8 channels
Synchronous Playback — DS-7716NI-K4/16P & DS-7732NI-K4/16P
16 channels
Decoding Capability
1-channel at 12 MP (30 fps) / 2-channel at 8 MP (30 fps) / 4-channel at 4 MP (30 fps) / 8-channel at 1080p (30 fps)
Stream Type
Video; Video & Audio
Audio Compression
G.711ulaw / G.711alaw / G.722 / G.726

Storage

SATA Interfaces
4 SATA interfaces
Maximum HDD Capacity
Up to 10 TB capacity for each disk
Continuous Recording
Supports 4 HDDs for continuous video recording
Storage Compression
H.265+ compression can reduce required storage space by up to 75%

Network

Remote Connection — DS-7708NI-K4/8P & DS-7716NI-K4/16P
64 channels
Remote Connection — DS-7732NI-K4/16P
128 channels
Network Protocols
TCP/IP, DHCP, IPv4, Hik-Connect, DNS, DDNS, NTP, RTSP, SADP, SMTP, SNMP, NFS, iSCSI, ISUP, UPnP™, HTTP, HTTPS
Network Interface
1 × RJ-45 10/100/1000 Mbps self-adaptive Ethernet interface
Secure Stream Transmission
Stream-over-TLS encryption technology supported
Network Management
Hik-Connect

PoE

PoE Interfaces — DS-7708NI-K4/8P
8 × RJ-45 10/100 Mbps self-adaptive Ethernet interfaces
PoE Interfaces — DS-7716NI-K4/16P
16 × RJ-45 10/100 Mbps self-adaptive Ethernet interfaces
PoE Interfaces — DS-7732NI-K4/16P
16 × RJ-45 10/100 Mbps self-adaptive Ethernet interfaces
PoE Power
≤ 200 W
PoE Standard
IEEE 802.3af/at

Smart Functions

Video Content Analytics
Supports multiple VCA events
Compatible Camera Smart Functions
VCA detection including motion, line crossing, and intrusion; heat map; ANPR; and people counting

Auxiliary Interfaces

RS-485
2 × RS-485, half-duplex
RS-232
1 × RS-232
Alarm Input / Output — DS-7708NI-K4/8P
16 inputs / 4 outputs
Alarm Input / Output — DS-7716NI-K4/16P & DS-7732NI-K4/16P
16 inputs / 4 outputs; 16 inputs / 9 outputs optional on applicable models
Optional /ALARM 16+9 Version
Provides 16 alarm inputs and 9 alarm outputs. The ninth alarm output supports control 12V.
Front USB
2 × USB 2.0
Rear USB
1 × USB 3.0

Power & General

Power Supply
100 to 240 VAC, 50 to 60 Hz
Power Consumption
≤ 20 W without enabling PoE and without HDD
Working Temperature
-10 °C to 55 °C (14 °F to 131 °F)
Working Humidity
10% to 90%
Dimensions (W × D × H)
445 × 400 × 75 mm (17.5" × 15.7" × 3.0")
Weight
≤ 5 kg (11 lb.) without HDD

Certifications

FCC
Part 15 Subpart B, ANSI C63.4-2014
CE
EN 55032:2015, EN 61000-3-2, EN 61000-3-3, EN 50130-4, EN 55035:2017

Physical Interfaces

1
Network interfaces with PoE function
2
eSATA
3
USB 3.0 interface and LAN network interface
4
Audio In and Audio Out
5
Video Out
6
HDMI interface
7
RS-232 serial interface
8
VGA interface
9
Alarm Out
10
Alarm In
11
RS-485 serial interface
12
GND
13
100 to 240 VAC power input
14
Power switch

Accessories Found in Datasheet

No separate included or optional accessories are specified in the provided datasheet.

Ideal Applications & Common Uses

Based on the recording, channel, PoE, storage, networking, and smart-function capabilities documented in the datasheet, this NVR series is suited to multi-camera IP surveillance installations such as:

  • Residential properties requiring larger multi-camera systems
  • Retail stores and commercial properties
  • Offices and professional facilities
  • Warehouses and storage facilities
  • Multi-entry properties requiring centralized recording
  • Applications using compatible line-crossing or intrusion analytics
  • Installations using compatible ANPR cameras
  • Locations using compatible people-counting or heat-map cameras
  • Systems requiring local PoE camera connections
  • Surveillance systems requiring multiple HDDs for continuous recording

Datasheet Notes

The first-page feature summary lists incoming bandwidth as 80 / 160 / 256 Mbps. However, the detailed specification table lists 80 Mbps for the DS-7708NI-K4/8P, 200 Mbps for the DS-7716NI-K4/16P, and 256 Mbps for the DS-7732NI-K4/16P. The values above preserve the detailed specification-table figures rather than silently reconciling the difference.

The datasheet also notes that alarm input/output configurations may be optional for certain models. Devices specifically selected with "/ALARM 16+9" provide 16 alarm inputs and 9 alarm outputs, with the ninth alarm output supporting 12V control.

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