HD-S108 Multifunction Sensor Box for LED Displays
The Huidu HD-S108 adds temperature, humidity and ambient-brightness sensing to an LED display control system. It displays temperature and humidity readings on the LED screen, adjusts screen brightness as ambient light changes, and supports remote program switching, pause and playback.
| Parameter | Specification |
|---|---|
| Working temperature | −40°C to 85°C |
| Temperature measurement range | −40°C to 123.8°C |
| Humidity measurement range | 0–100% RH |
| Brightness adjustment range | 1–100% |
| Sensitivity settings | High, medium and low; data intervals listed as 5 s / 10 s / 15 s |
| Standard wiring length | 1500 mm |
| Remote functions | Switch programs; pause and play |
Automatic Brightness and Sensor Readings
Connect the S108 to the LED display control system to display ambient temperature and humidity. Brightness adjustment follows changes in surrounding light, within the stated 1–100% adjustment range.
The working-temperature limit and temperature-measurement range are different specifications. Use the working range when planning the sensor installation. Check the control-system connection against the specification before fitting the box.
Dimensions Reference

Specification Download
Download the HD-S108 specification (PDF)
Frequently Asked Questions
Can the HD-S108 display temperature and humidity on an LED screen?
Yes. When connected to the LED display control system, it can show ambient temperature and humidity readings on the screen.
Does the S108 adjust LED brightness automatically?
Yes. It changes screen brightness according to ambient light, with a listed adjustment range of 1–100%.
What is the difference between working temperature and measurement range?
The working-temperature range is −40°C to 85°C. The temperature-measurement range is −40°C to 123.8°C; these describe different limits.
What can be controlled with the remote?
The remote functions are program switching, program pause and playback.
How long is the standard sensor wiring?
The standard wiring length is 1500 mm.




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