Dahua 32-channel 1U 16PoE 2HDDs WizSense Network Video Recorder (DHI-NVR4232-16P-EI)

The Dahua DHI-NVR4232-16P-EI is a professional-grade 32-channel 1U WizSense network video recorder designed for large-scale surveillance systems requiring high performance, advanced AI analytics, and efficient centralized video management. Equipped with 16 built-in PoE ports, dual HDD support, and powerful decoding capabilities, it delivers seamless recording, playback, and intelligent video processing for commercial, industrial, and enterprise security environments. With support for up to 16MP resolution cameras and advanced AI features such as face recognition, perimeter protection, and SMD Plus, it is built for intelligent, data-driven security operations.

Product Features

32-Channel High-Capacity Surveillance Management

The NVR supports up to 32 IP camera channels, making it ideal for large surveillance deployments across offices, factories, shopping centers, warehouses, and multi-site security systems.

Built-in 16-Port PoE for Simplified Installation

Integrated 16 PoE ports allow direct connection and power supply to IP cameras through Ethernet cables. This reduces installation complexity, eliminates external power adapters, and ensures stable connectivity.

Ultra HD 16MP Recording Support

Supports IP cameras up to 16MP resolution, enabling ultra-high-definition video capture for highly detailed monitoring, forensic analysis, and critical incident review.

High Bandwidth and Powerful Decoding Performance

With up to 256 Mbps bandwidth and advanced decoding capability, the system supports multiple high-resolution streams simultaneously, including 4 × 8MP or 16 × 1080p decoding performance.

Advanced WizSense AI Analytics Engine

The recorder supports AI by recorder and AI by camera, including face detection, face recognition, perimeter protection, and SMD Plus. It also supports advanced analytics such as people counting, heat maps, stereo analysis, and ANPR integration.

Intelligent Face Recognition System

Supports up to 10 face databases with 20,000 face images, enabling detailed identity management for access control, blacklist/whitelist monitoring, and visitor tracking.

Smart Motion and Target Filtering (SMD Plus)

AI-powered SMD Plus technology filters out false alarms caused by environmental movement such as rain, leaves, or lighting changes, improving alert accuracy and reducing unnecessary notifications.

Flexible Multi-Screen Monitoring and Playback

Supports multi-channel live view and playback with up to 36-screen display layouts, allowing security operators to monitor large installations efficiently from a single interface.

Dual HDD Storage Expansion

Equipped with 2 SATA ports supporting up to 16TB per drive, the system provides scalable storage capacity for long-term video retention and continuous recording environments.

Product Specifications

• Model: DHI-NVR4232-16P-EI
• Channels: 32 IP camera inputs
• Video Compression: Smart H.265+, Smart H.264+, H.265, H.264, MJPEG
• Maximum Resolution: Up to 16MP
• Incoming Bandwidth: 256 Mbps (AI off) / 180 Mbps (AI on)
• Recording Bandwidth: 256 Mbps (AI off) / 180 Mbps (AI on)
• Outgoing Bandwidth: 256 Mbps (AI off) / 180 Mbps (AI on)
• Decoding Capability:
  • 2 × 16MP @ 30 fps or
  • 4 × 8MP @ 30 fps or
  • 16 × 1080p @ 30 fps (AI off)
• PoE Ports: 16 × IEEE 802.3af/at
• PoE Power Budget: 130W total (max 25.5W per port)
• Storage: 2 × SATA ports, up to 16TB per HDD
• Video Output: 1 × HDMI, 1 × VGA (up to 4K HDMI support)
• Multi-Screen Display: Up to 36-view layout support
• Network Interface: 1 × RJ-45 (10/100/1000 Mbps)
• USB Ports: 2 × USB 2.0
• Audio Interface: 1 × RCA input, 1 × RCA output
• Alarm Inputs/Outputs: 4 inputs, 2 outputs
• AI Features: Face detection, face recognition, perimeter protection, SMD Plus, people counting, heat map, stereo analysis, ANPR support
• Face Database Capacity: Up to 10 databases / 20,000 face images
• User Access: Up to 128 users
• Remote Access: iOS and Android (P2P support)
• Protocol Support: ONVIF 22.06, CGI, SDK, HTTP, HTTPS, TCP/IP, IPv4/IPv6
• Operating System: Embedded Linux
• Power Supply: 100–240 VAC, 47–63 Hz
• Power Consumption: <10W (without HDD)
• Operating Temperature: –10 °C to +55 °C
• Storage Temperature: –20 °C to +60 °C
• Operating Humidity: 10%–93% RH
• Installation Type: Rack or desktop
• Housing Material: Metal
• Dimensions: 375.0 × 329.3 × 53.0 mm
• Weight: 2.60 kg (net)