Introduction
This manual provides detailed instructions for the Cleiscry DC 5V LED Dimmer USB Port Power Supply Line Dimming Color-Matching Extension Cable. This versatile USB switch is designed to control 5V DC LED strip lights and other compatible LED light sources, offering convenient on/off functionality, brightness adjustment, and color changing capabilities.
Please read this manual thoroughly before using the product to ensure proper operation and to maximize its lifespan.
Product Overview
The Cleiscry USB LED Dimmer features a compact control panel integrated into a USB cable, providing easy access to all functions. It is available in both white and black cord variations.

Image: Overview of the Cleiscry DC 5V LED Dimmer USB cables, showing both white and black cord options with their integrated control panels.
Control Panel Functions and Dimensions
The control panel features four distinct buttons for comprehensive control over your LED lighting. The cable has a total length of 1.5 meters.

Image: Detailed diagram illustrating the functions of each button on the control panel and the overall dimensions of the cable and control unit.
- 1. ON/OFF Button: Powers the connected LED light on or off.
- 2. Brightness Decrease Button (-): Short press to reduce brightness by 10%. Long press to enter stepless brightness adjustment mode (dim down continuously).
- 3. Color Change Button: Cycles through available color options (if supported by the connected LED light).
- 4. Brightness Increase Button (+): Short press to increase brightness by 10%. Long press to enter stepless brightness adjustment mode (brighten up continuously).
Setup
Setting up your Cleiscry USB LED Dimmer is straightforward. Ensure your LED light source is compatible with a 5V DC power supply and has appropriate wiring for connection.
Connecting to LED Light Source
The cable features a standard USB-A connector on one end and bare wires (positive and negative poles) on the other for direct connection to your LED light. The USB interface provides the 5V DC power.

Image: Diagram illustrating the USB interface and the corresponding positive and negative pole connections for wiring to an LED light.
- Identify the positive and negative terminals on your 5V DC LED light or strip.
- Connect the positive wire (typically red or marked) from the dimmer cable to the positive terminal of your LED light.
- Connect the negative wire (typically black or marked) from the dimmer cable to the negative terminal of your LED light.
- Once the LED light is securely wired, plug the USB-A connector of the dimmer cable into a compatible 5V USB power source (e.g., USB wall adapter, power bank, computer USB port).
Important: Ensure correct polarity when connecting the wires to avoid damage to the LED light or the dimmer.
Operating Instructions
Operate the LED dimmer using the intuitive control panel buttons:
- Power On/Off: Press the ON/OFF button (usually marked with a power symbol) to turn the connected LED light on or off.
- Adjust Brightness:
- For incremental adjustment, short press the "+" button to increase brightness by 10%, or the "-" button to decrease brightness by 10%.
- For stepless adjustment, long press the "+" button to continuously brighten, or the "-" button to continuously dim. Release the button when the desired brightness is reached.
- Change Color: Press the Color Change button (often marked with a lightning bolt or color cycle symbol) to cycle through different color modes or temperatures, if supported by your LED light.
Usage Scenarios
This USB dimmer is highly versatile and can be used with various 5V DC LED applications, such as:

Image: Visual examples demonstrating the application of the USB dimmer with a ring light, a standard LED bulb, and a flexible LED desk lamp.
- Controlling brightness and color of LED ring lights for photography or video.
- Adding dimming functionality to 5V USB-powered LED desk lamps.
- Integrating into DIY LED lighting projects that require adjustable brightness and color.
Maintenance
To ensure the longevity and optimal performance of your Cleiscry USB LED Dimmer, follow these simple maintenance guidelines:
- Cleaning: Wipe the control panel and cable with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.
- Storage: Store the cable in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Handling: Avoid bending or kinking the cable excessively, especially near the connectors and control panel, to prevent internal wire damage.
- Water Resistance: This product is not water resistant. Keep it away from liquids and high humidity.
Troubleshooting
If you encounter issues with your Cleiscry USB LED Dimmer, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| LED light does not turn on. |
|
|
| Brightness adjustment not working. |
|
|
| Color change button has no effect. |
|
|
Specifications
| Brand | Cleiscry |
| Model Number | USB5V |
| Color | White Cord (also available in Black Cord) |
| Power Source | DC (USB 5V) |
| Voltage | 5 Volts (DC) |
| Wattage | 1 watts |
| Connectivity Technology | USB |
| Control Method | Touch (Button Press) |
| Special Feature | Color Changing (with compatible LEDs), Dimming |
| Indoor/Outdoor Usage | Indoor |
| Water Resistance Level | Not Water Resistant |
| Item Weight | 1.13 ounces (approx. 32 grams) |
| Package Dimensions | 3.66 x 2.6 x 0.67 inches |
| Included Components | 1x USB switch cable |
Warranty and Support
Specific warranty information for this product is not provided in the available documentation. For any product support, warranty claims, or technical assistance, please contact Cleiscry directly through their official channels or the retailer from whom you purchased the product.
Important Safety Information
- Do not exceed the specified 5V DC input voltage.
- Ensure correct polarity when connecting wires to avoid damage.
- Do not expose the device to water or high humidity.
- Keep out of reach of children.
- Do not attempt to disassemble or modify the device.
- If the cable or control unit appears damaged, discontinue use immediately.