Dahua NVR4104HS-4KS2

The 4-Channel NVR (Network Video Recorder) offers a powerful and compact solution for small-to-medium security systems, with support for 4 IP camera inputs, high-resolution video display, and efficient recording capabilities. Here are the key specifications:

Core System

• Processor: Quad-core embedded processor for efficient data processing.
• Operating System: Embedded LINUX for stability and security.

Audio and Video

• IP Camera Input: 4 Channels for multi-camera setup.
• Two-way Talk: 1 channel input and 1 output for audio communication via RCA.

Display

• Video Interface: 1 HDMI and 1 VGA port.
• Resolution:
  • HDMI: Up to 4K (3840×2160), 1080p, 1280×1024, 1280×720.
  • VGA: Up to 1080p, 1280×1024, 1280×720.
• Decoding Capacity: Supports 2 channels at 4K (30fps) or 8 channels at 1080p (30fps).
• Multi-screen Display: Options for 1 or 4-screen layouts.

Recording

• Compression: Smart H.265+ for optimal storage efficiency.
• Resolution: Up to 8MP (4K) and supports various lower resolutions.
• Record Rate: Up to 80Mbps, allowing for high-quality recording.
• Record Modes: Manual, Schedule, Motion Detection (MD), Video Loss, Tampering.
• Record Interval: Adjustable from 1 to 120 minutes; pre-record up to 30 sec, post-record up to 300 sec.

Video Detection and Alarm

• Trigger Events: Recording, PTZ, Email alerts, Snapshot, Buzzer, Screen notifications.
• Detection: Motion Detection (396 zones), Video Loss, Tampering.
• Alarm: No dedicated alarm input/output ports.

Playback and Backup

• Playback: Supports up to 4-channel playback with functions like play, pause, rewind, digital zoom.
• Search Mode: Time/date, motion detection, and exact search.
• Backup Mode: USB device or network storage options.

Network

• Ethernet Interface: 1 RJ-45 (10/100Mbps) port.
• Protocols: HTTP, HTTPS, TCP/IP, IPv4/IPv6, UPnP, RTSP, UDP, SMTP, NTP, DHCP, DNS, FTP, and more.
• Max User Access: 128 users.
• Smartphone Compatibility: iOS and Android.
• Interoperability: ONVIF 2.4, SDK, CGI support for third-party integration.

Storage

• Internal HDD: 1 SATA III port with up to 6TB capacity.
• HDD Mode: Single HDD configuration.

Auxiliary Interface

• USB Ports: 2 USB 2.0 ports (1 front, 1 rear).

Electrical

• Power Supply: DC 12V/2A.
• Power Consumption: <6.3W (without HDD).

Environmental

• Operating Temperature: -10°C to +55°C (14°F to 131°F).
• Storage Temperature: -20°C to +70°C (-4°F to 158°F).
• Humidity: 0 to 90% RH.

Physical Specifications

• Dimensions: 260 mm x 224.9 mm x 47.6 mm (10.2″ x 8.9″ x 1.9″).
• Net Weight: 0.8 kg (1.76 lb) without HDD.
• Gross Weight: 1.6 kg (3.53 lb) without HDD.

Certifications

• CE: EN55032, EN55024, EN50130-4, EN60950-1.
• FCC: Part 15 Subpart B, ANSI C63.4-2014.
• UL: UL60950-1.

Summary

This NVR is a versatile, compact solution with support for up to 4 IP cameras, 4K display resolution, and advanced recording and playback features, making it suitable for various security applications. It’s ideal for users seeking reliable, efficient monitoring with convenient storage and user management options.