1. Important Safety Information
Please read all instructions carefully before installation and use. Retain this manual for future reference.
- Power Supply: This LED strip operates on 12V DC. Connecting it to a higher voltage power source will damage the strip and may pose a fire hazard. Ensure your power supply is compatible and provides sufficient wattage for the length of the strip used. Power supply and controller are not included.
- Water Resistance: This product has an IP30 rating, meaning it is non-waterproof. Do not expose it to water, moisture, or high humidity. It is suitable for indoor use or protected outdoor environments where it will not come into contact with liquids.
- Cutting: The LED strip can be cut to desired lengths only at designated cutting marks, typically indicated by a copper pad and a scissor icon. Cutting elsewhere will damage the circuit and render that section unusable.
- Installation: Ensure the installation surface is clean, dry, and smooth for proper adhesion. Avoid bending the strip sharply, as this can damage the internal circuitry.
- Electrical Connections: All electrical connections should be made securely to prevent short circuits or loose contacts. If you are unsure about wiring, consult a qualified electrician.
- Heat Dissipation: While LED strips generate minimal heat, ensure adequate ventilation, especially when installed in enclosed spaces, to prolong product lifespan.
2. Product Overview
The TOPXCDZ GS1903 Pixel LED Strip is a 5-meter addressable light tape featuring 60 LEDs per meter. It utilizes 5050SMD RGB LEDs with an external GS1903 chipset, allowing for individual control of every 3 LEDs (20 ICs per meter). This enables dynamic full-color effects such as chasing, scanning, and various dream color patterns. The strip operates on 12V DC and comes with a white PCB, 6mm width, and an IP30 non-waterproof rating.
Package Contents:
- 1 x 5-meter GS1903 Pixel LED Strip
Note: Power supply and LED controller are not included and must be purchased separately.

Image 2.1: Detailed view of the LED strip, highlighting the 5050SMD RGB LED chip, GS1903 IC (one IC controls three LEDs), safe resistor for stable voltage, and designated cutting points.
3. Specifications
| Feature | Specification |
|---|---|
| LED Source | 5050SMD RGB External GS1903 chipset |
| IC Type | GS1903 (WS2811 compatible) |
| Working Input Voltage | 12V DC |
| Output Power | 0.2W per LED |
| Drive Mode | Constant Voltage |
| LED Quantity | 60 LEDs/Meter (3 LEDs controlled by 1 IC) |
| IC Quantity | 20 ICs/Meter |
| Pixels | 20 Pixels/Meter |
| Grey Scale | 256 |
| Color | RGB (Full Color) |
| View Angle | 120° |
| Working Temperature | -20°C to 60°C |
| PCB Color | White PCB |
| Waterproof Rating | IP30 (Non-waterproof) |
| PCB Width | 6mm |
| Power (Max) | 14W/Meter |
| Control Method | App (via compatible controller) |

Image 3.1: LED strip dimensions and layout, indicating 60 LEDs/meter, 12V DC input, 6mm PCB width, and approximate 50mm segment length.
4. Setup and Installation
4.1 Pre-installation Checklist:
- 12V DC Power Supply: Ensure it provides sufficient current (Amps) for the total wattage of your LED strip. For a 5-meter strip at 14W/meter, you would need at least 70W (approx. 6A at 12V).
- Compatible LED Controller: An addressable LED controller (e.g., SP107E, SP110E, K-1000C, or similar WS2811/GS1903 compatible controller) is required to control the strip's effects.
- Wiring: Appropriate gauge wires for connecting the strip to the controller and power supply.
- Clean Surface: The installation surface should be clean, dry, and free of dust or grease.
4.2 Installation Steps:
- Plan Your Layout: Determine the desired path for your LED strip. Measure and mark the installation area.
- Prepare the Surface: Clean the installation surface thoroughly. For optimal adhesion, use rubbing alcohol to remove any residues and let it dry completely.
- Cut the Strip (if necessary): If a shorter length is required, carefully cut the LED strip only at the designated cutting marks (copper pads with a scissor icon).
- Connect to Controller: Connect the LED strip to your compatible addressable LED controller. The strip typically has four wires: 12V (positive), GND (negative), DI (Data Input), and DO (Data Output). Connect these to the corresponding terminals on your controller.
- Connect Power Supply: Connect the 12V DC power supply to your LED controller. Ensure correct polarity (positive to positive, negative to negative).
- Test Before Final Adhesion: Before peeling off the adhesive backing and permanently mounting the strip, connect all components and power them on to ensure the strip functions correctly.
- Mount the Strip: Once tested, peel off the protective backing from the adhesive tape on the back of the LED strip and carefully press the strip onto the prepared surface. Apply firm, even pressure along the entire length.

Image 4.1: Connection points on the LED strip (12V, DO, DI, GND).
5. Operating Instructions
The TOPXCDZ GS1903 Pixel LED Strip is an addressable LED product, meaning each segment of 3 LEDs can be controlled independently. To operate the strip and achieve various lighting effects, a compatible LED controller (not included) is required.
5.1 Using the LED Controller:
- Refer to the specific user manual provided with your LED controller for detailed instructions on its operation.
- Most controllers for GS1903/WS2811 strips offer control via a dedicated mobile application (App), remote control, or onboard buttons.
- Ensure your controller is set to the correct IC type (GS1903 or WS2811) and the correct number of pixels/LEDs to match your strip's configuration (20 pixels/meter, 60 LEDs/meter).
5.2 Common Functions (Controller Dependent):
- Color Selection: Choose from a wide spectrum of static colors.
- Dynamic Modes: Access various pre-programmed effects such as chasing, scanning, fading, flashing, and other 'dream color' patterns.
- Brightness Adjustment: Increase or decrease the intensity of the light.
- Speed Control: Adjust the speed of dynamic lighting effects.
- Customization: Some advanced controllers allow for custom pattern creation and sequencing.

Image 5.1: Example of dynamic RGB lighting effects achievable with the LED strip.

Image 5.2: Further illustration of the diverse lighting patterns.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your LED strip.
- Cleaning: Gently wipe the surface of the LED strip with a soft, dry, lint-free cloth to remove dust. Do not use abrasive cleaners, solvents, or excessive moisture.
- Connection Check: Periodically inspect all electrical connections to ensure they are secure and free from corrosion. Loose connections can lead to flickering or intermittent operation.
- Physical Inspection: Check the strip for any signs of physical damage, such as cracks, tears, or exposed wiring. If damage is found, discontinue use and replace the affected section or the entire strip.
- Environmental Conditions: Ensure the strip remains within its specified operating temperature range (-20°C to 60°C) and is not exposed to moisture, as it is non-waterproof (IP30).
7. Troubleshooting
If you encounter issues with your LED strip, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| LED strip does not light up. | No power, incorrect voltage, loose connections, faulty controller, damaged strip. | Verify 12V DC power supply is connected and working. Check all wiring connections (12V, GND, DI). Ensure the controller is powered on and functioning. Test with a known good controller if possible. Inspect the strip for visible damage. |
| Incorrect colors or patterns. | Controller settings incorrect, data wire (DI) connected to wrong pin, faulty controller. | Check your LED controller's settings to ensure the correct IC type (GS1903/WS2811) and pixel count are selected. Verify the DI wire is connected to the data output of the controller. |
| Only a section of the strip is not working. | Damaged segment, improper cut, loose connection at a cut point. | Inspect the non-working section for physical damage. If the strip was cut, ensure the connections at the cut point are secure and properly soldered (if applicable). |
| LEDs are flickering or dim. | Insufficient power supply, loose connections, voltage drop over long runs, faulty controller. | Ensure your 12V DC power supply has enough wattage/current for the entire strip. Check all connections for tightness. For very long runs, consider injecting power at multiple points or using thicker gauge wires. |
| Strip gets excessively hot. | Overvoltage, poor ventilation, short circuit. | Immediately disconnect power. Verify the power supply is 12V DC. Ensure the strip is not covered or installed in an enclosed space without airflow. Check for any visible short circuits. |
8. Warranty and Support
This product is manufactured to high-quality standards. For any questions, technical assistance, or warranty claims, please contact the seller or manufacturer directly through your purchase platform. Please have your order number and product model (GS1903 Pixel LED Strip) ready when contacting support.





