NVD1805DH-4I-4K - Digital decoder Dahua Technology - Free user manual and instructions
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| Product Type | Network Video Recorder (NVR) |
| Model | NVD1805DH-4I-4K |
| Brand | Dahua Technology |
| Video Inputs | 4 channels (4I) |
| Maximum Resolution | 4K (3840×2160) |
| Compression | H.265 / H.264 |
| Display Interface | HDMI 2.0, VGA |
| Audio | 1-ch RCA input, 1-ch RCA output |
| Storage | 1 SATA HDD (up to 10TB) |
| Network Interface | 1 RJ45 10/100/1000 Mbps |
| USB Ports | 2 USB 2.0, 1 USB 3.0 |
| PoE Support | No (separate switch required) |
| Dimensions (W×D×H) | 300 mm × 225 mm × 45 mm |
| Weight | 1.2 kg (without HDD) |
| Power Supply | DC 12V, 2A |
| Power Consumption | ≤ 10W (without HDD) |
| Operating Temperature | -10°C to +55°C |
| Main Functions | Live view, recording, playback, motion detection, remote access |
| Mounting | Desktop or rack-mountable (optional bracket) |
| Cleaning | Use dry cloth; avoid liquids |
| Safety | CE, FCC, RoHS compliant |
| Spare Parts & Repairability | HDD replacement, fan replacement; contact Dahua support |
Frequently Asked Questions - NVD1805DH-4I-4K Dahua Technology
How do I set up the NVD1805DH-4I-4K for the first time?
Connect the NVR to your network via Ethernet, attach a monitor via HDMI, power on, and follow the on-screen wizard to initialize the system, set a password, and configure cameras.
What hard drive types are compatible?
Use 3.5-inch SATA hard drives designed for surveillance, such as WD Purple or Seagate SkyHawk, up to 10TB capacity.
Can I access the NVR remotely?
Yes, enable remote access via the network settings. Use the Dahua DMSS app or web browser after setting up DDNS or a static IP and forwarding ports.
How many cameras can I connect?
This model supports up to 4 IP cameras via network connection. It does not have built-in PoE; cameras need separate power or a PoE switch.
What is the maximum recording resolution?
The NVR supports recording at up to 4K (3840×2160) resolution, depending on camera capabilities.
How do I perform a factory reset?
Press and hold the reset button (located on the back panel) for 10 seconds while the NVR is powered on. Release when the system reboots.
Can I upgrade the firmware?
Yes, download the latest firmware from the Dahua support website, save it to a USB drive, and use the update option in the NVR menu.
What should I do if the NVR does not detect cameras?
Check that cameras are on the same network, have valid IP addresses, and are using the correct protocol (ONVIF or Dahua). Ensure no IP conflicts.
Is the NVR compatible with third-party cameras?
Yes, it supports ONVIF compliant cameras. Some features may be limited; for best performance, use Dahua cameras.
How do I clean and maintain the device?
Turn off the NVR, use a soft dry cloth to wipe exterior. Avoid using any liquids. Ensure vents are not blocked. Replace the fan if noisy.
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