Product SKU: DH-PFM800-4K
Product Overview
The Dahua DH-PFM800-4K is a one-channel passive video balun designed to transmit HDCVI, TVI, AHD and CVBS camera signals over copper CAT5e or CAT6 twisted-pair cabling. It supports resolutions from 720p through to 4K, with HDCVI 4 MP, 5 MP and 4K transmission distances of up to 200 metres. Lower-resolution HDCVI, TVI and AHD signals can be transmitted further, depending on the selected format and resolution. The passive design requires no separate power supply, making it a practical solution for analogue HD CCTV installations where twisted-pair cable is preferred over coaxial cabling. Built-in anti-static, surge and interference protection helps improve transmission reliability in suitable installations. A complete camera-to-recorder connection normally requires a compatible balun at each end, while camera power must be supplied separately.
Key Capabilities
4K Video over Twisted Pair
The balun supports HDCVI video resolutions up to 4K over copper CAT5e or CAT6 cable. This provides an alternative to coaxial cable for compatible high-resolution analogue surveillance systems.
Up to 200 Metre High-Resolution Transmission
HDCVI 4 MP, 5 MP and 4K video can be transmitted up to 200 metres. TVI and AHD signals at 4 MP or 5 MP are also specified for transmission distances up to 200 metres.
Multi-Format Compatibility
Support for HDCVI, TVI, AHD and CVBS allows the balun to be used with a broad range of compatible analogue and analogue HD cameras, recorders and test equipment.
No Power Supply Required
The passive design operates without an external power adapter. Camera power remains separate, while the balun handles conversion and transmission of the video signal only.
Extended Lower-Resolution Distances
Compatible 1080p signals can reach up to 250 metres, while 720p signals can reach up to 400 metres. Cable quality and environmental interference still affect actual performance.
Electrical Protection
Integrated electrostatic-discharge and surge protection helps protect the video path from electrical interference and transient events when the system is installed and earthed correctly.
Best For
- Analogue HD CCTV Installations: Transmits compatible HDCVI, TVI and AHD video over twisted-pair cabling.
- 4K HDCVI Camera Runs: Supports 4K HDCVI signals over distances up to 200 metres with suitable copper cable.
- Existing CAT5e or CAT6 Cabling: Helps reuse appropriate twisted-pair infrastructure instead of installing new coaxial cable.
- Long Camera Connections: Supports lower-resolution signals at distances beyond 200 metres when installation conditions permit.
- Passive CCTV Accessories: Suitable where a video transmission accessory without a local power requirement is preferred.
Why Choose the DH-PFM800-4K
The DH-PFM800-4K is a practical choice when a compatible analogue HD camera must be connected to a recorder through copper CAT5e or CAT6 cable rather than coaxial cable. Its support for HDCVI, TVI, AHD and CVBS provides flexibility across different system formats, while 4K HDCVI capability makes it suitable for higher-resolution installations. The passive design removes the need for a separate balun power supply and simplifies installation at the camera and recorder ends. Available through Security Wholesalers, this model is particularly useful for retrofit projects, long cable routes and sites with suitable twisted-pair cabling already installed. Buyers should confirm the signal format, resolution, cable material, required distance and whether the product is packaged individually or as a pair.
Buyer Decision Tips
Buyer Tip: Use genuine copper CAT5e or CAT6 cable. Copper-clad aluminium cable has greater resistance and may reduce transmission stability, especially on longer runs or in electrically noisy environments.
Buyer Tip: A complete twisted-pair video connection normally requires one compatible balun at the camera and another at the recorder. Confirm whether the selected package contains one unit or one pair before ordering.
Key Features & Technical Specifications
| Product Type |
One-channel passive analogue HD video balun. |
| Model |
DH-PFM800-4K. |
| Transmission Channels |
1 video channel. |
| Compatible Formats |
HDCVI, TVI, AHD and CVBS. |
| Supported Resolutions |
720p, 1080p, 4 MP, 5 MP and 4K. |
| Recommended Cable |
Copper UTP CAT5e or CAT6 cable. |
| HDCVI 720p Distance |
Up to 400 metres. |
| HDCVI 1080p Distance |
Up to 250 metres. |
| HDCVI 4 MP, 5 MP and 4K Distance |
Up to 200 metres. |
| TVI 720p Distance |
Up to 400 metres. |
| TVI 1080p Distance |
Up to 250 metres. |
| TVI 4 MP and 5 MP Distance |
Up to 200 metres. |
| AHD 720p Distance |
Up to 400 metres. |
| AHD 1080p Distance |
Up to 250 metres. |
| AHD 4 MP and 5 MP Distance |
Up to 200 metres. |
| Coaxial Video Connector |
BNC male. |
| Twisted-Pair Connection |
RJ45 connection. |
| BNC Impedance |
75 ohms. |
| UTP Cable Impedance |
100 ohms. |
| Power Requirement |
Passive operation with no separate power supply required. |
| Electrostatic Protection |
Level 3 contact and air discharge protection in accordance with IEC 61000-4-2. |
| UTP Surge Protection |
2 kV differential mode and 4 kV common mode in accordance with IEC 61000-4-5. |
| Dimensions |
173.8 mm × 19.5 mm × 21 mm. |
| Weight |
Approximately 40 g per pair. |
| Camera Power Transmission |
Not supported; camera power must be supplied separately. |
Ideal Use Cases
4K HDCVI Camera Runs
Transmits compatible 4K HDCVI video over copper twisted-pair cable at distances up to 200 metres.
Retail CCTV Upgrades
Helps reuse suitable CAT5e or CAT6 cabling when installing compatible analogue HD cameras.
Long Building Corridors
Supports extended video runs where the camera is positioned well away from the recorder.
Warehouses
Suitable for analogue HD cameras installed across large internal areas using structured cabling.
Existing Twisted-Pair Infrastructure
Allows appropriate network-style cable to carry compatible analogue video without converting the camera to IP.
Multi-Format Service Work
Supports compatible HDCVI, TVI, AHD and CVBS systems encountered during upgrades and maintenance.
Choosing the Right Model
- Choose this model if: The system needs passive transmission of compatible analogue or analogue HD video over copper CAT5e or CAT6 cable.
- Choose a powered balun if: The required cable distance or installation conditions exceed the practical capability of passive transmission.
- Choose an IP extender if: The camera uses Ethernet and PoE rather than HDCVI, TVI, AHD or CVBS video.
- Choose a different model if: The installation requires video, power and control signals to share one specialised transmission accessory.
FAQs
- What is the Dahua DH-PFM800-4K used for?
The DH-PFM800-4K is a one-channel passive video balun used to transmit compatible HDCVI, TVI, AHD or CVBS video over copper CAT5e or CAT6 twisted-pair cable. It is normally installed as a pair, with one balun at the camera end and the other at the recorder end. It does not transmit camera power and does not require its own power supply.
- How far can the DH-PFM800-4K transmit 4K video?
For HDCVI, the DH-PFM800-4K supports 4 MP, 5 MP and 4K video transmission up to 200 metres when suitable copper CAT5e or CAT6 cable is used. TVI and AHD transmission is specified up to 200 metres for 4 MP and 5 MP signals. Actual performance depends on cable quality, termination, interference and the connected equipment.
- Does the DH-PFM800-4K require power?
No. The DH-PFM800-4K is a passive video balun and does not require a separate power supply. It converts the video signal between 75-ohm coaxial BNC and 100-ohm twisted-pair cabling. Camera power must be supplied separately because this balun is for video transmission only.
- Which video formats are compatible with the DH-PFM800-4K?
The DH-PFM800-4K supports HDCVI, TVI, AHD and CVBS video formats. Supported resolutions include 720p, 1080p, 4 MP, 5 MP and 4K, although the maximum transmission distance varies by format and resolution. The camera and recorder must support the same selected signal format and resolution.
- Is one DH-PFM800-4K enough for a camera connection?
A complete twisted-pair video link normally requires two compatible baluns: one connected to the camera and one connected to the recorder. The official physical specifications list weight for one pair. Confirm whether the product is supplied individually or as a pair before ordering, because packaging can vary between sellers.
- What should be checked before buying the DH-PFM800-4K?
Confirm the camera and recorder signal format, required resolution, cable distance and cable material before ordering. The DH-PFM800-4K is available through Security Wholesalers for compatible analogue HD video systems, but copper CAT5e or CAT6 cable should be used and camera power must be supplied separately.
Additional Information
Dahua DH-PFM800-4K_Datasheet
