1. Introduction
This user manual provides detailed instructions for the installation, operation, and maintenance of the Uniview UNV NVR301-04X 4K Network Video Recorder. Please read this manual thoroughly before using the product to ensure proper and safe operation.
The NVR301-04X is a high-performance network video recorder designed for surveillance systems, supporting Ultra 265/H.265/H.264 video formats and up to 4K resolution recording. It offers versatile connectivity and storage options for your security needs.
2. Safety Information
Always adhere to the following safety guidelines to prevent injury or damage to the device:
- Power Supply: Use only the power adapter provided with the device. Ensure the power source matches the NVR's voltage requirements.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the NVR to prevent overheating.
- Environment: Avoid exposing the NVR to extreme temperatures, humidity, dust, or direct sunlight. Do not place it near heat sources.
- Handling: Handle the device with care. Avoid dropping or subjecting it to strong vibrations.
- Servicing: Do not attempt to disassemble or repair the NVR yourself. Refer all servicing to qualified personnel.
3. Product Overview
The UNV NVR301-04X is a robust 4K Network Video Recorder capable of managing multiple video inputs and providing high-quality recording and playback. Key features include:
- Support for Ultra 265/H.265/H.264 video formats.
- 4-channel input for connecting multiple surveillance cameras.
- Compatibility with mainstream cameras supporting ONVIF (Profile S, Profile G, Profile T) and RTSP protocols.
- 1-channel HDMI and 1-channel VGA for simultaneous display output.
- Up to 4K resolution recording for clear video capture.
- Supports 1 SATA HDD up to 8TB for extensive storage (Hard Drive Not Included).
- Cloud upgrade support for convenient firmware updates.

Figure 3.1: Front view of the NVR301-04X, showing the UNV logo and indicator lights.

Figure 3.2: Angled view of the NVR301-04X, highlighting its compact design and ventilation.
4. Setup
4.1 Unboxing and Package Contents
Carefully unpack the NVR and check for any signs of damage. Verify that all components are present. The standard package includes the NVR unit, power adapter, and a quick start guide. Note: A hard drive is not included and must be purchased separately.
4.2 Hard Drive Installation
To install a SATA hard drive (up to 8TB):
- Power off the NVR and disconnect all cables.
- Remove the top cover of the NVR by unscrewing the retaining screws.
- Carefully connect the SATA data and power cables from the NVR to the hard drive.
- Secure the hard drive to the NVR chassis using the provided screws.
- Replace the top cover and secure it with the screws.
4.3 Physical Connections
Connect the necessary cables as follows:
- Power: Connect the power adapter to the NVR's DC IN port and then to a power outlet.
- Network: Connect an Ethernet cable from the NVR's LAN port to your network router or switch.
- Display: Connect a monitor to the NVR's HDMI or VGA output port.
- Cameras: Connect IP cameras to your network. The NVR will discover them via the network.
- USB Devices: Connect a USB mouse for navigation and control.
4.4 Initial Configuration
Upon first boot, the NVR will guide you through an initial setup wizard. This typically includes:
- Setting up a strong administrator password.
- Configuring network settings (DHCP or static IP).
- Initializing the hard drive for recording.
- Searching for and adding IP cameras to the system.
5. Operating
5.1 Live View
After successful setup, you can view live feeds from connected cameras on the connected monitor. Use the mouse to navigate the interface, switch between camera views, and access menus.
5.2 Recording
The NVR supports various recording modes:
- Continuous Recording: Records 24/7.
- Motion Detection Recording: Records only when motion is detected.
- Scheduled Recording: Records during specified time periods.
- Alarm Recording: Records when an alarm event is triggered.
Configure recording schedules and settings via the NVR's menu interface.
5.3 Playback
To review recorded footage:
- Access the 'Playback' menu from the main interface.
- Select the desired camera(s) and date/time range.
- Use the timeline to navigate through recordings.
- Playback controls (play, pause, fast forward, rewind) are available on screen.
5.4 Remote Access
The NVR can be accessed remotely via a web browser or a dedicated mobile application. Refer to the NVR's network settings for IP address information and port forwarding requirements, or use cloud services if available for easier remote access setup.
6. Maintenance
6.1 Regular Checks
Periodically check the NVR's status:
- Verify that all cameras are online and recording.
- Check the hard drive status to ensure it is functioning correctly.
- Monitor the NVR's temperature to prevent overheating.
6.2 Firmware Updates
Regularly check for firmware updates from the official UNV website. Firmware updates can provide new features, improve performance, and enhance security. Follow the instructions provided with the firmware update package carefully.
6.3 Cleaning
Keep the NVR clean by gently wiping its exterior with a soft, dry cloth. Do not use liquid cleaners or aerosols. Ensure ventilation openings are free from dust accumulation.
6.4 Data Backup
For critical footage, regularly back up important recordings to an external USB drive or network storage. The NVR's interface provides options for exporting video clips.
7. Troubleshooting
This section addresses common issues you might encounter:
- No Video Output: Check HDMI/VGA cable connections, ensure the monitor is on and set to the correct input. Restart the NVR.
- Cameras Offline: Verify network connectivity for cameras and NVR. Check camera power supplies. Ensure cameras are correctly added to the NVR.
- No Recording: Check hard drive status (initialized, healthy). Verify recording schedules and motion detection settings. Ensure sufficient storage space.
- Network Connection Issues: Check Ethernet cable. Verify NVR's IP address and network settings. Ensure router/switch is functioning.
- Forgot Password: Refer to the NVR's quick start guide or the official UNV support website for password reset procedures.
If problems persist, contact UNV technical support for assistance.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | NVR301-04X |
| Video Input | 4-channel |
| Video Formats | Ultra 265/H.265/H.264 |
| Recording Resolution | Up to 4K |
| Video Output | 1 x HDMI, 1 x VGA (simultaneous) |
| HDD Support | 1 SATA HDD, up to 8TB |
| Connectivity Technology | VGA, HDMI |
| Compatible Devices | Camera (ONVIF, RTSP) |
| Package Dimensions | 17.32 x 11.54 x 3.23 inches |
| Item Weight | 3.16 pounds |
9. Warranty and Support
For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Uniview (UNV) website. Warranty coverage typically varies by region and product model.
For technical support, product inquiries, or service requests, please contact UNV customer support through their official channels. You can usually find contact information, FAQs, and additional resources on the Uniview official website.





