1. Introduction
Thank you for choosing the DaToo Clip On Aquarium Light with Timer. This manual provides essential information for the safe and effective use of your new aquarium light. This 8W full spectrum LED light is designed to enhance the aquatic environment for your fish and plants, offering customizable lighting options with dimming and timing functions. Please read these instructions thoroughly before installation and operation.
2. Safety Information
- Power Supply: This device operates on a human-safe 5V DC power supply. Use only a compatible USB adapter (not included) with a 5V output. Do not use adapters with higher voltage.
- Water Exposure: The light features an enclosed structure designed to withstand accidental splashes. However, it is not submersible. Do not immerse the light or its USB connector in water.
- Installation: Ensure the light is securely clipped to the aquarium rim before connecting power. The clip is suitable for aquarium rims less than 0.39 inches (1 cm) thick.
- Maintenance: Disconnect power before performing any maintenance or cleaning.
- Children and Pets: Keep the device out of reach of children and pets to prevent accidental damage or injury.

3. Package Contents
Please check the package for the following items:
- DaToo Clip On Aquarium Light Unit (with integrated USB cable and control panel)
Note: A USB power adapter is NOT included and must be supplied by the user.
4. Specifications
| Model Name | H-DTSAL-2 |
| Power | 8W |
| Voltage | DC 5V |
| Light Diameter | 3.54 inches (9 cm) |
| Gooseneck Length | 7.28 inches (18.5 cm) |
| Power Cord Length | 4.4 feet (1.34 meters) |
| LED Beads | 48 pcs (24 White, 16 Blue, 4 Green, 4 Red) |
| Lighting Modes | All LEDs, White LED, Red+Green+Blue LEDs |
| Brightness Levels | 10 (10% to 100%) |
| Timer Options | 3 hours, 9 hours, 12 hours |
| Applicable Tank Size | 1-5 Gallon (rim thickness less than 0.39 inches) |
| Material | Aluminum Alloy Shell |


5. Setup Instructions
- Unpack the Light: Carefully remove the aquarium light from its packaging.
- Attach to Aquarium: Position the clip-on bracket onto the rim of your aquarium. The double-screw structure allows for secure attachment without additional tools. Ensure the aquarium rim thickness is less than 0.39 inches (1 cm). Tighten the screws by hand until the light is firmly in place.
- Connect Power: Insert the USB plug into a compatible 5V USB power adapter (not included), a USB port on a computer, or a mobile power bank.
- Adjust Position: Utilize the 360° rotating gooseneck to adjust the light head to your desired angle and height for optimal illumination of your aquarium.


6. Operating Instructions
The control panel on the power cord allows for easy adjustment of the light's functions.

- Power On/Off (① button): Press the power button to turn the light on or off.
- Brightness Adjustment (② ③ buttons): Use the '+' button to increase brightness and the '-' button to decrease brightness. There are 10 adjustable brightness levels (10% to 100%).
- Light Mode Selection (④ button): Press the mode button to cycle through the three available lighting modes:
- All LEDs (White + Blue + Red + Green)
- White LED Only
- Red + Green + Blue LEDs Only
- Timer Setting (⑤ button): Press the timer button to set the desired lighting duration. Each press cycles through the options: 3 hours, 9 hours, 12 hours. The light will automatically turn off after the selected duration and will turn on again at the same time the next day.
7. Maintenance
- Cleaning: Disconnect the power supply before cleaning. Use a soft, damp cloth to wipe the light unit and gooseneck. Do not use abrasive cleaners or solvents.
- LED Care: Avoid touching the LED beads directly. If dust accumulates, gently wipe with a dry, soft cloth.
- Cable Inspection: Periodically check the USB cable and connections for any signs of damage. If damage is found, discontinue use and replace the unit.
8. Troubleshooting
| Problem | Possible Cause | Solution |
| Light does not turn on. | No power supply or faulty connection. | Ensure the USB cable is securely connected to a working 5V USB power source. Try a different USB adapter or port. |
| Light flickers or dims unexpectedly. | Insufficient power or loose connection. | Verify the power adapter provides stable 5V output. Check all connections for looseness. |
| Timer function is not working. | Timer not set correctly. | Press the timer button repeatedly until the desired duration (3h, 9h, or 12h) is selected. Ensure the light is on when setting the timer. |
| Light modes cannot be changed. | Mode button not functioning or light is off. | Ensure the light is powered on. Press the mode button firmly. If the issue persists, contact customer service. |
9. Warranty and Support
DaToo is committed to providing quality products. While specific warranty details are not provided in this manual, we offer professional customer service. If you encounter any issues or have questions regarding your DaToo Clip On Aquarium Light, please contact our customer service team. We aim to reply and assist you within 24 hours.