Description
Dahua WizSense Series | DHI-NVR4232-EI
32CH 1U 2HDDs WizSense Network Video Recorder
The Dahua DHI-NVR4232-EI is a powerful 32-channel WizSense NVR featuring AI capabilities for face detection, recognition, perimeter protection, and Smart Motion Detection (SMD Plus).
It supports up to 256 Mbps bandwidth (180 Mbps when AI is enabled) and can decode up to 16 × 1080p@30 fps with adaptive decoding.
This NVR works with third-party IP cameras, making it ideal for small and medium-sized businesses seeking reliable, intelligent surveillance solutions.
AI & Smart Features
- Face Detection & Recognition: Supports 10 face databases with 20,000 face images; 1-channel face detection by NVR, 8-channel by camera.
- Perimeter Protection: Filters false alarms from animals, lighting, and weather; supports up to 2 AI channels by NVR, 8 by camera.
- SMD Plus: Human and vehicle secondary filtering to reduce false alarms.
- AI Search: Quickly search multi-channel footage using metadata or uploaded face images.
- Heat Map & People Counting: Analyzes crowd density and human presence for business insights.
- Quick Pick Technology: Allows selection of human or vehicle targets from SMD events.
Technical Specifications
| Category | Specification |
|---|---|
| System | |
| Main Processor | Industrial-grade processor |
| Operating System | Embedded Linux |
| Interface | Web / Local GUI |
| AI Capabilities | |
| Face Detection / Recognition | 1-ch by NVR, 8-ch by Camera; supports 10 databases, 20,000 images |
| Perimeter Protection | 2 AI channels by NVR, 8 by Camera; 10 IVS rules per channel |
| SMD Plus | 4 channels by NVR, 8 channels by Camera; reduces false alarms |
| AI Features by Camera | Face detection & recognition, perimeter protection, SMD Plus, ANPR, people counting, stereo analysis, heat map |
| Video & Audio | |
| Access Channel | 32 Channels |
| Network Bandwidth | AI disabled: 256 Mbps; AI enabled: 180 Mbps |
| Resolution | 16MP / 12MP / 8MP / 6MP / 5MP / 4MP / 3MP / 1080p / 960p / 720p / D1 / CIF |
| Decoding Capability | AI disabled: 16 × 1080p@30 fps max; AI enabled: 12 × 1080p@30 fps max; adaptive decoding supported |
| Video Output | 1 HDMI, 1 VGA (HDMI: 3840×2160, 1920×1080, 1280×1024, 1280×720; VGA: 1920×1080, 1280×1024, 1280×720) |
| Multi-screen Display | 1st Screen: 1/4/8/9/16/25/36; 2nd Screen: 1/4/8/9/16 |
| Compression | Smart H.265+, H.265, Smart H.264+, H.264, MJPEG |
| Audio | G.711a, G.711u, PCM, G726; 1-ch RCA input/output |
| Network | |
| Protocol | HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, SNMP, UDP, SMTP, NTP, DHCP, DNS, FTP, DDNS, P2P |
| Mobile Access | iOS, Android |
| Third-party Camera Support | Panasonic, Sony, Samsung, Axis, Pelco, Arecont, ONVIF, Canon |
| Recording & Playback | |
| Playback Channels | Up to 16 channels |
| Record Mode | General, Motion Detection, Intelligent, Alarm |
| Backup | USB device and network |
| Alarm | |
| General & Intelligent Alarms | Motion detection, privacy masking, video loss, PIR, IPC alarm, face recognition, SMD Plus, people counting, stereo analysis, heat map |
| Alarm Linkage | Record, snapshot, audio, buzzer, log, preset, email, IPC output |
| Alarm Input/Output | 4 / 2 channels |
| Storage & Ports | |
| HDD Interface | 2 SATA ports, up to 16TB each |
| USB | 1 front USB 2.0, 1 rear USB 2.0 |
| Network Port | 1 RJ-45 10/100/1000 Mbps |
| General | |
| Power Supply | 12 VDC, 4 A |
| Power Consumption | <10W (without HDD) |
| Net Weight | 1.51 kg |
| Gross Weight | 2.76 kg |
| Dimensions | 375 × 284.3 × 53 mm (W×L×H) |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -20°C to +60°C |
| Installation | Rack or desktop |
| Certifications | FCC, CE-EMC, CE-LVD |
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