Hikvision DS-7732NXI-K4 32-Channel 4K AcuSense NVR with AI
100% Official Brand / Serial Number Verifiable / 3-Year Warranty
(HDD not included)
- 32-channel recording — connect up to 32 IP cameras to one unit
- 4 HDD bays support up to 64TB total storage for long retention
- AI face detection and perimeter protection on 4 channels
- Smart H.265+ compression cuts bandwidth and storage use by up to 75%
- Free remote viewing through the Hik-Connect app on any device
- Works with all ONVIF-compliant IP cameras for flexible setup
- Dual Gigabit Ethernet ports for reliable high-bandwidth recording
Details
AI That Finds What Matters
This NVR uses AcuSense technology to separate people and vehicles from false alarms. Motion Detection 2.0 filters out leaves, rain, and shadows so you only get alerts that matter. Face detection lets you search recordings by face picture and instantly locate a specific person across all connected cameras.
Record 32 Cameras in 4K Clarity
Handle up to 32 IP cameras simultaneously with 256 Mbps incoming bandwidth. The unit records in resolutions up to 12MP, so you capture license plates and facial details with sharp clarity. Smart H.265+ compression reduces storage requirements by up to 75% compared to standard H.264, letting you keep more footage on the same drives.
Built for Installers and IT Managers
The 1.5U chassis fits neatly into standard server racks or equipment rooms. Dual Gigabit Ethernet ports allow for camera traffic separation or link aggregation. HDMI output delivers 4K resolution to your monitor, and the unit supports 16-channel simultaneous playback for quick forensic review.
Expandable Storage That Scales With You
Four SATA bays accept drives up to 16TB each, giving you a maximum of 64TB on-board storage. That is enough for weeks of continuous recording across a full 32-camera deployment. Add or swap drives without special tools, and manage recording schedules per camera to balance retention with storage capacity.
Specification
| Perimeter Protection | |
| By Device | 2-ch, 4 MP (HD network camera, H.264/H.265) video analysis for human and vehicle recognition to reduce false alarm |
| By Camera | All channels |
| Target Recognition | |
| Facial Detection and Analytics | Face picture comparison, human face capture, face picture search |
| Face Picture LibraryUp to | 16 face picture libraries, with up to 20,000 face pictures in total (each picture ≤ 4 MB, total capacity ≤ 1 GB) |
| Facial Detection and Analytics Performance | 1-ch, 8 MP |
| Face Picture Comparison | 4-ch |
| Motion Detection 2.0 | |
| By Device | All channels, up to 4 MP (when enhanced SVC mode is enabled, up to 8 MP) video analysis for human and vehicle recognition to reduce false alarm |
| 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) Smooth Playback (HC) ON & AI ON: 1-ch@12 MP (30 fps)/1-ch@8 MP (30 fps)/3-ch@4 MP (30 fps)/7-ch@1080p (30 fps) Smooth Playback (HC) ON & AI OFF: 1-ch@12 MP (30 fps)/2-ch@8 MP (30 fps)/5-ch@4 MP (30 fps)/11-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 BrowserIE | 11, Chrome V57, Firefox V52, Safari V12, Edge V89, or above version |
| 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 |
| Auxiliary Interface | |
| SATA | 4 SATA interfaces |
| Capacity | Up to 16 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 | 12VN/A (optional to support) |
| DC | 12VN/A (optional to support) |
| General | |
| GUI Language | English, Russian, Bulgarian, Hungarian, Greek, German, Italian, Czech, Slovak, French, Polish, Dutch, Portuguese, Spanish, Romanian, Turkish, Japanese, Danish, Swedish Language, Norwegian, Finnish, Korean, Traditional Chinese, Thai, Estonian, Vietnamese, Croatian, Slovenian, Serbian, Latvian, Lithuanian, Uzbek, Kazakh, Arabic, Ukrainian, Kyrgyz , Brazilian Portuguese, Indonesian |
| Power | Supply100 to 240 VAC, 50 to 60Hz |
| 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") |
| ≤ | 5 kg (without HDD, 11 lb.) |
| Certification | |
| FCCPart | 15 Subpart B, ANSI C63.4-2014 |
| CEEN | 55032: 2015, EN 61000-3-2, EN 61000-3-3, EN 50130-4, EN 55035: 2017 |
| Obtained CertificationCE, FCC, IC, CB, KC, UL, Rohs, Reach, WEEE, RCM, UKCA, LOA, BIS | \*Product performance is based on testing in a controlled environment. Your results may vary due to several external and environmental factors. |