Huidu HD-K524 relay controller overview
The Huidu HD-K524 is a full-color LED relay controller used with a compatible Huidu sending card or play box. It provides six power switch control channels, a timing function, and an input for one photosensitive probe. Use it when an asynchronous full-color display installation needs scheduled power control and light-responsive brightness adjustment.
What the HD-K524 does
- Six-channel power control: control up to six power switch circuits from the relay controller.
- Scheduled operation: the built-in timing function can take the place of a separate timer and delay device in the supported control setup.
- Automatic brightness adjustment: connect one compatible photosensitive probe so the system can respond to ambient light.
Connections and operating specifications
| Item | Specification |
|---|---|
| Power switch control | 6 channels |
| Photosensitive probe | 1 input; probe compatibility should be checked before ordering |
| Connectors | 5 V power, photosensitive probe, sending card/play box, and power switch control |
| Rated supply voltage | 4.2–5.5 V; 5.0 V typical |
| Operating temperature | −40 to 80 °C |
| Operating humidity | 0–95% |
Compatibility and setup notes
Confirm the sending card or play box model, probe, wiring, and power supply before installation. Huidu lists a sending card/play box connection for this unit. Keep the control-card battery seated for reliable time storage, and supply the controller and relay correctly using a standard 5 V supply. The HD-K524 is a relay accessory; it is not a video processor or LED receiving card.
Frequently asked questions
How many power circuits can the HD-K524 control?
It supports six power switch control channels.
Can it adjust LED screen brightness automatically?
Yes, when a compatible photosensitive probe is connected to its one probe input and the control system is configured for automatic adjustment.
What power supply does it need?
Huidu specifies a standard 5 V supply, with a rated voltage range of 4.2–5.5 V. Verify the complete installation requirements before connecting the power circuits.
Product image and documentation
Download specification: Huidu HD-K524 Full Color Relay Controller Specification.
Manufacturer reference: Huidu HD-K524 product specifications.
Conclusion
Choose the HD-K524 when a compatible Huidu asynchronous full-color LED control system needs six-channel power switching, scheduled operation, and an optional light-sensing input. Check controller and probe compatibility before purchase; contact us if you need help matching the accessory to your LED display system.
