NVD2105DH-4I-4K - Digital decoder Dahua Technology - Free user manual and instructions
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| Product Type | Network Video Decoder |
| Model | NVD2105DH-4I-4K |
| Dimensions | 440 mm x 320 mm x 45 mm (1U rackmount) |
| Weight | Approximately 3.5 kg |
| Power Supply | DC 12V, 3A |
| Maximum Decoding Resolution | 4K (3840 x 2160) at 30 fps |
| Video Output | HDMI 2.0, VGA (optional) |
| Network Interface | 10/100/1000 Mbps Ethernet |
| Audio Support | G.711, G.726, AAC |
| Number of Channels | 4 IP camera inputs (4I) |
| Main Functions | Real-time decoding, multi-screen display (1/4/8/9/16), recording playback, PTZ control, alarm management |
| Compatibility | ONVIF Profile S/G/T, Dahua SDK |
| Maintenance | Clean with a soft, dry cloth; do not use liquid cleaners |
| Safety Precautions | Use a grounded power outlet, avoid exposure to moisture or heat sources |
| Spare Parts & Repairability | Power adapter, remote control (if included), HDMI cable; contact Dahua for service |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Storage Temperature | -10°C to 60°C (14°F to 140°F) |
Frequently Asked Questions - NVD2105DH-4I-4K Dahua Technology
How do I connect the NVD2105DH-4I-4K to my network?
Connect an Ethernet cable from the decoder's RJ45 port to your network switch or router. Ensure the device is powered on and obtain an IP address via DHCP or configure a static IP in the settings.
What is the maximum number of cameras that can be viewed simultaneously?
The device supports decoding up to 4 IP camera streams at 4K resolution. For lower resolutions, it can display up to 16 cameras in a multi-screen layout.
Does it support audio output?
Yes, the decoder has audio output via HDMI and can decode audio formats like G.711, G.726, and AAC. Speakers must be connected to the display or external audio system.
How to reset the device to factory default?
Press and hold the reset button (usually a pinhole on the back panel) for about 10 seconds while the device is powered on. Release when the status lights blink.
Can I control PTZ cameras through this decoder?
Yes, the decoder supports PTZ control via ONVIF or Dahua protocols. Use the IR remote control or web interface to pan, tilt, and zoom supported cameras.
What video compression formats are supported?
It supports H.265, H.264, MJPEG, and MPEG4 decoding. Ensure your cameras use one of these codecs for compatibility.
How to upgrade the firmware?
Download the latest firmware from the Dahua support website. Access the decoder's web interface, navigate to System > Upgrade, select the firmware file, and click Upgrade. Do not power off during the process.
Why is there no video output?
Check that the HDMI cable is securely connected to both the decoder and the display. Verify the display input source. Ensure the decoder is powered on and the network connection is active.
Is it possible to record video locally?
No, this is a decoder only; it does not have internal storage. For recording, connect to a separate NVR or use the cameras' onboard storage.
What is the power consumption?
Typical power consumption is around 15-20 watts under normal operation. Use the included DC 12V adapter rated for 3A.
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USER MANUAL NVD2105DH-4I-4K Dahua Technology
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Product information
Brand : Dahua Technology
Model : NVD2105DH-4I-4K
Category : Digital decoder