Huidu HD-C16L LED Control Card – Specs, Price & Resources

Huidu HD-C16L is a popular asynchronous LED control card used in many digital display projects. From storefront screens to outdoor billboards, it helps manage content in a simple and reliable way.

Digital displays are everywhere today. Shops, events, and smart city projects all depend on stable LED control systems. The right control card makes a screen easier to set up, cheaper to run, and more flexible in daily use.

1. What is the Huidu HD-C16L?

The Huidu HD-C16L is an asynchronous LED control card that brings together sending, receiving, and playback functions on one board. It removes the need for a dedicated computer, making content management easier and more affordable. This all-in-one design is why it has become a popular choice for advertising screens, retail signage, and smart city projects.

1.1 Specifications

The balance of high pixel handling, strong multimedia performance, and low power consumption makes the HD-C16L suitable for both small and large-scale LED projects.

Category	Details
Pixel Capacity	Up to 650,000 pixels (cascade mode); single C16L loads about 200,000 px
Max Dimensions	Width up to 8,192 px; height up to 1,920 px
Video Playback	Dual 1080p windows; smooth 60 Hz frame rate
Processor / GPU	Quad-core 1.5 GHz CPU, Mali-G31 GPU
Memory	4 GB internal storage (≈2 GB available for content)
Interfaces	12 × HUB75E, Gigabit output, 100M input, USB, 3.5 mm audio, relay, GPS & sensor ports
Power	DC 5V, max 8W
Size / Weight	174.9 × 101.4 mm; ~0.14 kg
Operating Range	-40 °C to +80 °C; 0-80% humidity (no condensation)

1.2 Price Range

The price is about $70.

We recommend checking the latest offers directly through our platform. Market prices vary depending on order quantity, region, and whether optional modules (such as 4G module) are included.

Register LedInCloud to view live pricing, compare options, and explore the best deal for your project.

2. Huidu C16L Key Features

The Huidu HD-C16L stands out because it balances performance with ease of use.

2.1 Strong performance for smooth playback

The card uses a 1.5 GHz quad-core processor and Mali-G31 GPU. This hardware can handle full HD video, including two 1080p windows at the same time. Motion looks clean at 60 Hz, and text scrolls smoothly without stutter.

2.2 Flexible content updates

You can push programs to the card in many ways. Connect a USB drive for offline updates, use Wi-Fi for quick transfers, or choose a 4G module for locations without wired internet. For more advanced setups, the card links to the Huidu XiaoHui Cloud Platform, so you can manage multiple screens from a single account.

2.3 Built-in Wi-Fi and app control

The HD-C16L comes with onboard Wi-Fi. You can control it through the LedArt mobile app on Android or iOS.

2.4 Support for sensors and automation

The card has ports for temperature, brightness, GPS, and other sensors. This means the display can respond to its environment. For example, brightness can adjust automatically at night, or a GPS-linked vehicle screen can change content based on location.

2.5 Output and control extras

Beyond video, the card offers audio output, relay control, and multiple HUB75E connectors. The relay lets you switch the display’s power remotely. Audio support allows synchronized playback of video and sound. The 12 HUB75E ports give flexibility for different panel configurations.

3. Real-World Applications

The Huidu HD-C16L fits a wide range of display projects. Here are the most common use cases:

Retail signage – Shop windows, store promotions, and indoor advertising.
Outdoor screens – Lamp-pole displays, small billboards, and public notice boards.
Smart city projects – Bus stop screens, wayfinding signs, and environmental data displays.
Vehicle-mounted LED – Taxi tops, truck screens, and mobile advertising.

In each case, the card’s mix of strong performance, multiple update methods, and sensor support makes it a practical and reliable choice.

4. HD-C16L vs HD-C08L vs HD-D16

When choosing a Huidu control card, it helps to compare models side by side.

Specification	HD-C16L	HD-C08L	HD-D16
Loading Capacity	650,000 pixels	196,608 pixels	65,536 pixels
Max. Width	8192 pixels	2048 pixels	1024 pixels
Gigabit Ethernet Output	1	–	–
HUB Interface	12×HUB75E	8×HUB75E	4×HUB75E
Memory	4GB	4GB	4GB
External Storage Expansion	Max. 128GB	Max. 128GB	Max. 128GB
Video Decoding	2 × 1080P	2 × 1080P	1 × 1080P
Wi-Fi	100Mbps	100Mbps	100Mbps
LAN	√	√	√
USB	√	√	√
Cloud Management	√	√	√
4G Module	Optional	Optional	Optional
Relay	√	√	–
Sensor Interface	3 channels	3 channels	3 channels
Supported Content Types	Video, images, text, animated text, clock, streaming, timing, counting, weather, tables, etc.

5. Getting Started with C16L Huidu

Setting up the Huidu HD-C16L is straightforward, even if you are not an expert.

5.1 Hardware Setup

Power connection – Use a stable 5V DC power supply. The maximum power draw is around 8W, so consumption is low.
Connect to the screen – Link your LED panels using the HUB75E ports. For larger displays, you can cascade through the Gigabit output.
Networking – Plug in a LAN cable for wired control, or attach the Wi-Fi antenna to use wireless mode. If you purchased the optional 4G module, install a SIM card and antenna.
Sensors and GPS – Connect temperature, brightness, or GPS sensors if your project needs live data or automatic adjustments.
Relay and audio – Use the relay output for remote power control. Connect the 3.5 mm audio jack if your display requires sound.

With the hardware in place, the card is ready for software setup.

5.2 Resources & Downloads

To make installation easier, we provide all the essential resources in one place:

All of these files are available on our Huidu Resource Download page. We recommend registering for free access to the latest versions, firmware updates, and additional support documents. By signing up, you can also view up-to-date pricing and explore other Huidu products tailored to your projects.

6. Conclusion

The Huidu HD-C16L is a reliable, all-in-one LED control card. It handles video, images, text, and more without needing a computer. With Wi-Fi, optional 4G, and cloud support, it works well for retail, outdoor, and smart city projects.