Description
Huidu HD-A4L Sending Box – 650,000 Pixels | Mid-Size LED Screen Controller with LAN & Cloud Content Publishing for LED Display Screens
Package Included
| Version | Package Included |
| HD-A4L | 1× HD-A4L Controller, 1× Power Cable, 1× User Manual |
About this item
- High-performance LED screen controller supporting HDMI input and Ethernet output
- Compatible with multiple LED module pixel pitches, up to 655,360 pixels loading capacity (max width 16,384 px)
- Brand features such as asynchronous & synchronous playback, multi-terminal control, and cloud-based content publishing for enhanced flexibility
- Compact design with passive cooling to ensure long-term reliability
- Ideal for indoor/outdoor fixed installations, rental displays, and creative LED setups
Order & Logistics
- Lead Time: Typically ships within 2–5 business days
- Packing: Cardboard box
- Shipping: Orders in this series qualify for our Free Shipping Policy on purchases over $399. All products in this series are shipped directly from our headquarters warehouse（Standard Shipping: 9–18 days|Express Shipping: 5–9 days.）
Key Specifications
- Input Ports: 1× HDMI
- Output Ports: 1000 Mbps Ethernet
- Supported Resolutions: Up to 655,360 pixels (max width 16,384 px)
- Control Method: USB, Wi-Fi 5 GHz + 2.4 GHz, Cloud control
- Power Supply: DC input (via included adapter)
- Operating Temperature: –20 °C to +60 °C
Usage Notes / Installation Tips
- Always power off before connecting or disconnecting signal cables
- Use shielded network cables for stable data transmission
- Ensure adequate ventilation for prolonged operation
- Avoid placing the controller in high-humidity or dusty environments
Technical Specifications
| Picture |  |
 |
 |
 |
| Model | A6L | A5L | A4L | A3L |
| Loading Capacity | 2.62M pixels | 1.3M pixels | 655,360 pixels | 655,360 pixels |
| Max Width | 65,536 px | 16,384 px | 16,384 px | 8192 px |
| Memory | 64 GB | 16 GB | 16 GB | 16 GB |
| External Expansion | Max 128 GB | Max 128 GB | Max 128 GB | Max 128 GB |
| Video Hard Decoding | 4K | 4K | 4K | 4K |
| Video Signal Input | 1× HDMI | 1× HDMI | 1× HDMI | – |
| HDMI Cascade | √ | – | – | – |
| Streaming Media | √ | √ | √ | √ |
| LAN | 1000 Mbps | 1000 Mbps | 1000 Mbps | 100 Mbps |
| Wi-Fi Control | 5 GHz + 2.4 GHz | 5 GHz + 2.4 GHz | 5 GHz + 2.4 GHz | 2.4 GHz |
| Screen Casting | Optional | – | – | – |
| USB Playback | √ | √ | √ | √ |
| Cloud Management | √ | √ | √ | √ |
| 4G/5G Module | Optional 4G/5G | Optional 4G/5G | Optional 4G/5G | Optional 4G |
| External Sensor | 2 channels | 2 channels | 2 channels | 1 channel |
Applications
- Fixed LED billboards
- Rental stage LED screens
- Indoor/outdoor advertising displays
- Conference / exhibition LED displays
- Smart commercial display