The DS-7732NXI-K4 is a 32-channel AcuSense network video recorder designed for medium to large commercial surveillance systems that require centralized IP camera management, intelligent event analysis, high recording bandwidth, 4K local display output, and expandable multi-drive storage.
The recorder supports up to 32 IP camera inputs with up to 256 Mbps incoming bandwidth. H.265+ compression helps reduce bandwidth and storage requirements while supporting high-resolution network camera recording across commercial facilities, warehouses, campuses, retail properties, and multi-building sites.
Built-in AcuSense capabilities support Motion Detection 2.0, human and vehicle classification, perimeter protection, and facial recognition under supported configurations. Smart search and smart playback help operators locate relevant events more efficiently during video review.
The DS-7732NXI-K4 provides independent HDMI and VGA outputs, with HDMI resolution up to 4K. Four SATA interfaces support expandable local storage, while 16-channel synchronized playback, dual Gigabit Ethernet ports, Audio I/O, alarm interfaces, and serial communication ports support professional surveillance system integration.
High-Capacity Recording and Intelligent Management Benefits
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32-Channel IP Camera Support – Connects and manages up to 32 compatible network cameras from one centralized recorder.
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High Recording Bandwidth – Supports up to 256 Mbps incoming bandwidth for multi-camera commercial surveillance systems.
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AcuSense Intelligent Analysis – Supports human and vehicle classification, Motion Detection 2.0, perimeter protection, and facial recognition under compatible configurations.
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4K Local Display – HDMI output supports resolutions up to 3840 × 2160 for detailed live viewing and playback.
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Four-Bay Storage Design – Four SATA interfaces provide expandable local recording capacity for longer retention requirements.
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Dual Gigabit Network Ports – Two RJ45 Gigabit Ethernet interfaces support flexible network deployment and system management.
Technical Specifications
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IP Camera Inputs: Up to 32 channels
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Incoming Bandwidth: Up to 256 Mbps
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Outgoing Bandwidth: Up to 160 Mbps
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Maximum Recording Resolution: Up to 12MP
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Decoding Capacity with AI Off: Up to 2 channels at 12MP, 3 channels at 8MP, 6 channels at 4MP, or 12 channels at 1080p
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Decoding Capacity with AI On: Up to 1 channel at 12MP, 2 channels at 8MP, 4 channels at 4MP, or 8 channels at 1080p
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Video Compression: H.265+, H.265, H.264+, and H.264
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Intelligent Analytics: Motion Detection 2.0, human and vehicle classification, perimeter protection, facial recognition, smart search, and smart playback
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Video Output: Independent HDMI and VGA outputs
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Maximum HDMI Resolution: Up to 4K, 3840 × 2160
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Synchronized Playback: Up to 16 channels
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Internal Storage: Four SATA interfaces
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Maximum HDD Capacity: Up to 10 TB per HDD
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Network Interface: Two RJ45 10/100/1000 Mbps Ethernet ports
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Audio Interface: One RCA audio input and one RCA audio output
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Two-Way Audio: Supported through the RCA audio input and output
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Alarm Interface: 16 alarm inputs and 4 alarm outputs
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USB Interface: Two USB 2.0 ports and one USB 3.0 port
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Serial Interface: Two RS-485 ports and one RS-232 port
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Power Supply: 100 to 240 VAC, 50 to 60 Hz
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Chassis: 1.5U rack-mount design
Recommended Applications
- Warehouse and Distribution Centers
- Large Retail Properties
- Office and Business Campuses
- Industrial Facilities
- School and University Campuses
- Healthcare Facilities
- Apartment and Multi-Building Communities
- Transportation and Logistics Sites
- Commercial Parking Facilities
- Central Security Monitoring Rooms
| Intelligent Analytics |
| AI by Device |
Facial recognition, perimeter protection, Motion Detection 2.0 |
| AI by Camera |
Facial recognition, perimeter protection, video structuralization, throwing objects from building, Motion Detection 2.0, VCA |
| Facial Recognition |
| Facial Detection and Analytics |
Face picture comparison, human face capture, face picture search |
| Face Picture Library |
Up to 16 face picture libraries, with up to 20,000 face pictures in total; each picture ≤ 4 MB and total capacity ≤ 1 GB |
| Facial Detection and Analytics Performance |
1-ch, 8 MP |
| Face Picture Comparison |
4-ch face picture comparison alarm |
| Motion Detection 2.0 |
| By Device |
All channels, up to 4 MP; when enhanced SVC mode is enabled, up to 8 MP |
| By Camera |
All channels |
| Perimeter Protection |
| By Device |
Up to 2-ch 4 MP video analysis for human and vehicle recognition to reduce false alarms; supports HD network cameras using H.264/H.265 |
| By Camera |
All channels |
| Video and Audio |
| IP Video Input |
32-ch |
| Incoming Bandwidth |
256 Mbps |
| Outgoing Bandwidth |
160 Mbps |
| HDMI Output |
1-ch, 4K (3840 × 2160)/30Hz, 2K (2560 × 1440)/60Hz, 1920 × 1080/60Hz, 1600 × 1200/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz, 1024 × 768/60Hz |
| VGA Output |
1-ch, 1920 × 1080/60Hz, 1280 × 1024/60Hz, 1280 × 720/60Hz |
| Video Output Mode |
HDMI/VGA independent output |
| CVBS Output |
N/A |
| Audio Output |
1-ch, RCA (Linear, 1 KΩ) |
| Two-Way Audio |
1-ch, RCA (2.0 Vp-p, 1 KΩ, using the audio input) |
| Decoding |
| Decoding Format |
H.265/H.265+/H.264+/H.264 |
| Recording Resolution |
12 MP/8 MP/6 MP/5 MP/4 MP/3 MP/1080p/UXGA/720p/VGA/4CIF/DCIF/2CIF/CIF/QCIF |
| Synchronous Playback |
16-ch |
| Decoding Capability |
AI on: 1-ch@12 MP (30 fps)/2-ch@8 MP (30 fps)/4-ch@4 MP (30 fps)/8-ch@1080p (30 fps)
AI off: 2-ch@12 MP (30 fps)/3-ch@8 MP (30 fps)/6-ch@4 MP (30 fps)/12-ch@1080p (30 fps) |
| Stream Type |
Video, Video & Audio |
| Audio Compression |
G.711ulaw/G.711alaw/G.722/G.726/AAC |
| Network |
| Remote Connection |
128 |
| API |
ONVIF (Profile S/G), SDK, ISAPI |
| Compatible Browser |
IE 11, Chrome 57+, Firefox 52+, Safari 12+, Edge 89+ |
| Network Protocol |
TCP/IP, DHCP, IPv4, IPv6, DNS, DDNS, NTP, RTSP, SADP, SMTP, SNMP, NFS, iSCSI, ISUP, UPnP™, HTTP, HTTPS |
| Network Interface |
2 RJ-45 10/100/1000 Mbps self-adaptive Ethernet interfaces |
| Network Management |
Mobile App for easy network management |
| Auxiliary Interface |
| SATA |
4 SATA interfaces |
| Capacity |
Up to 10 TB capacity for each HDD |
| Serial Interface |
2 RS-485 (half-duplex), 1 RS-232 |
| Alarm In/Out |
16/4; 16/9 is optional |
| USB Interface |
Front panel: 2 × USB 2.0; Rear panel: 1 × USB 3.0 |
| Ctrl 12V |
N/A; optional support |
| DC 12V |
N/A; optional support |
| General |
| GUI Language |
English, Russian, Bulgarian, Hungarian, Greek, German, Italian, Czech, Slovak, French, Polish, Dutch, Portuguese, Spanish, Romanian, Turkish, Japanese, Danish, Swedish, Norwegian, Finnish, Korean, Traditional Chinese, Thai, Estonian, Vietnamese, Croatian, Slovenian, Serbian, Latvian, Lithuanian, Uzbek, Kazakh, Arabic, Ukrainian, Kyrgyz, Brazilian Portuguese, Indonesian |
| Power Supply |
100 to 240 VAC, 50 to 60 Hz |
| Consumption |
≤ 20 W (without HDD) |
| Working Temperature |
-10 °C to 55 °C (14 °F to 131 °F) |
| Working Humidity |
10% to 90% |
| Dimension (W × D × H) |
445 × 400 × 75 mm (17.5" × 15.7" × 3.0") |
| Weight |
≤ 5 kg (without HDD, 11 lb.) |
| Certification |
| 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 |
| Obtained Certification |
CE, FCC, IC, CB, KC, UL, RoHS, REACH, WEEE, RCM, UKCA, LOA, BIS |
| Important Notes |
| Alarm Interface Option |
Certain models can be configured with 16 alarm inputs and 9 alarm outputs when the /Alarm16+9 option is selected. |
| AI Function Limitation |
Facial recognition, Motion Detection 2.0, and perimeter protection cannot be enabled at the same time. |
| Available Model |
DS-7732NXI-K4 |
Find answers to common questions about compatibility, installation, infrared night vision, recording storage, and AcuSense human and vehicle classification.
What commercial projects is the DS-7732NXI-K4 suitable for?
The DS-7732NXI-K4 is designed for medium to large commercial surveillance deployments that require centralized recording for up to 32 IP cameras. It is suitable for warehouses, manufacturing facilities, school campuses, office buildings, distribution centers, retail properties, apartment complexes, and other sites with multiple monitored areas.
Can the DS-7732NXI-K4 support warehouse and manufacturing surveillance?
Yes. The recorder can centralize video from loading docks, production areas, warehouse aisles, inventory zones, employee entrances, parking areas, and exterior access points. This gives facility and security teams a more organized way to manage recordings across operationally important areas.
Is the DS-7732NXI-K4 appropriate for school or commercial campus projects?
Yes. Its 32-channel capacity makes it suitable for installations covering entrances, corridors, administrative areas, parking lots, common spaces, and multiple sections of a commercial or educational campus. The final system design should account for camera placement, bandwidth, storage retention, and monitoring requirements.
Can this NVR manage cameras across a large commercial property?
The DS-7732NXI-K4 can serve as a centralized recording platform for cameras distributed throughout a larger property. It is useful for projects where authorized personnel need to review footage from different departments, buildings, entrances, or operational zones without managing several smaller recorders.
Why choose a 32-channel AcuSense NVR for a commercial installation?
A 32-channel AcuSense NVR provides capacity for larger camera deployments while supporting more efficient event review. Human and vehicle classification can help security teams focus on relevant activity and reduce time spent reviewing alerts caused by less important movement in supported event configurations.
Can the DS-7732NXI-K4 be used to upgrade an existing surveillance system?
Yes. It can be considered for compatible recorder replacements, camera expansions, and commercial system upgrades. Before deployment, installers should verify camera compatibility, firmware requirements, recording settings, available bandwidth, storage needs, and whether existing analytics are supported by the proposed system configuration.
How can the DS-7732NXI-K4 improve incident investigations?
Centralized recording and intelligent event filtering can help authorized users locate relevant footage more efficiently. When supported cameras and analytics are properly configured, security teams can narrow searches around human or vehicle activity instead of manually reviewing long periods of unrelated motion.
Does the standard DS-7732NXI-K4 include built-in PoE ports?
No. The standard DS-7732NXI-K4 is different from the DS-7732NXI-K4/16P model. Cameras connected to the standard version require external PoE switches or other suitable network infrastructure. Installers should calculate switch capacity, PoE power budget, network bandwidth, and cable requirements before installation.
What should installers verify before deploying the DS-7732NXI-K4?
Installers should confirm camera compatibility, total incoming bandwidth, decoding requirements, storage retention targets, network switch capacity, monitor outputs, user permissions, remote access requirements, and backup expectations. AI functions should also be validated against the connected camera models, firmware versions, and regional product specifications.
How many hard drives can the DS-7732NXI-K4 support?
The DS-7732NXI-K4 provides four internal SATA interfaces for surveillance hard drives. Actual retention time depends on drive capacity, camera count, resolution, frame rate, compression settings, scene activity, and recording schedule. Maximum supported capacity per drive should be confirmed using the datasheet and compatible-drive information for the exact regional version.
