Huidu B8H Control for LED Poster Screens
The HD-B8H is a dedicated LED poster display controller that combines a media player, third-party application support and local program production. Content can be created and played on the terminal itself, while wireless screen mirroring provides another way to display material from computers and mobile devices.
It is suited to mobile LED screens, digital signage and video-wall installations. Connections are available for central-control equipment, cameras, speakers, environmental sensors and infrared touchscreens.
Technical Specifications
| Parameter | Specification |
|---|---|
| Single-card loading | 2.6 million pixels |
| Cascaded loading | 8.8 million pixels; up to 14 units in a cascaded configuration |
| Maximum layout dimensions | Width up to 65,536 pixels or height up to 8,192 pixels, subject to configuration and total loading limits |
| Display outputs | 4 × Gigabit Ethernet |
| Network communication | 1 × Gigabit Ethernet; TCP/UDP communication |
| HDMI inputs | 2 × HDMI 1.4; daisy-chaining and picture-in-picture support |
| HDMI output | 1 × HDMI OUT for loop-out or monitoring |
| USB | 2 ports: USB 2.0 / USB 3.0; media playback, firmware updates and storage expansion |
| OTG | 1 port with customizable OTG/USB mode; USB flash-drive function by default |
| Wireless networking | Dual Wi-Fi chips; 2.4 GHz and 5 GHz bands; simultaneous hotspot and wireless internet access |
| Serial control | 1 × RS232 and 1 × RS485 |
| Sensor interface | 1 × TTL port for environmental sensors or GPS devices |
| Relay | 1 × K0 relay port |
| Audio | 3.5 mm TRS stereo output; reserved 2-pin MIC socket |
| Standby power | Less than 0.5 W |
Playback and Screen Mirroring
Wireless mirroring supports Windows, Mac, iOS, Android and screen-mirroring devices. The controller also supports local program editing, production and playback, alongside third-party applications.
Playback performance is two 4K streams, six 1080p streams, ten 720p streams or twenty 360p streams. When the total spliced-screen load exceeds 8.29 million pixels, these limits become one 4K stream, three 1080p streams, five 720p streams or ten 360p streams. These playback figures are separate from the LED loading capacity.
For a multi-poster installation, confirm the number of controllers, total pixel count and HDMI cascade layout before selecting the configuration. The maximum width and height are separate limits, not a single supported resolution.
Product Image and Specification

Download Specification:
Huidu HD-B8H LED Poster Display Controller Specification
Frequently Asked Questions
What is the difference between B8H single-card and cascaded capacity?
One HD-B8H supports 2.6 million pixels. The stated cascaded-system capacity is 8.8 million pixels, with up to 14 units supported in a cascaded configuration.
Can the B8H mirror a phone or computer wirelessly?
Yes. Wireless screen mirroring supports Windows, Mac, iOS, Android and screen-mirroring devices. Dual-band Wi-Fi supports 2.4 GHz and 5 GHz operation.
Can I create and play programs directly on the controller?
Yes. The HD-B8H supports local program editing, production and playback, as well as third-party applications.
How many 4K videos can the B8H play?
The stated playback capability is two 4K streams. When the total splicing load exceeds 8.29 million pixels, it is reduced to one 4K stream.
What are the HDMI connections used for?
Two HDMI 1.4 inputs support daisy-chaining and picture-in-picture. The HDMI OUT connection provides signal loop-out or video monitoring.




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