Huidu HD-A3L Sending Box – 650,000 Pixels | Asynchronous Controller | Entry-Level LED Display Controller with USB & Wi-Fi for LED Display Screens

Package Included

Version	Package Included
HD-A3L	1 × HD-A3L Controller 1 × Power Cable 1 × User Manual

About this item

• High-performance LED multimedia controller supporting asynchronous playback with up to 655,360 pixels loading capacity
• Compatible with multiple LED module pixel pitches, max width up to 8192 pixels
• Built-in Wi-Fi (2.4 GHz) and USB for convenient content updates without a PC
• Supports cloud platform “XiaoHui Cloud” and mobile APP “LedArt” for wireless control
• Compact design with passive cooling for long-term stability
• Ideal for commercial LED displays, smart display systems, and small to mid-size indoor/outdoor 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: None (asynchronous playback)
• Output Ports: 100 Mbps Ethernet
• Supported Resolutions: Up to 655,360 pixels (max width 8192 px)
• Control Method: USB, Wi-Fi 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
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 systems