Product Overview
The Adetu 4-inch Square LED Recessed Lighting offers versatile illumination with selectable color temperatures and dimmable functionality. Designed for easy installation in various ceiling types, this ultra-thin LED light is IC-rated, ETL certified, and Energy Star compliant, ensuring safety and energy efficiency.

Figure 1: Adetu 4-inch Square LED Recessed Light with junction box and spring clips.
Setup and Installation
Follow these steps for a hassle-free installation of your Adetu Square LED Recessed Downlight. The unique round cut-off design simplifies the process, allowing for installation in round holes.
- Prepare the Ceiling: Cut a hole in the ceiling using the provided 1:1 hole template. The recommended cutout hole is 4.25 inches (108mm).
- Connect the Junction Box: Connect the junction box to the main electrical cable. Ensure all connections are secure and comply with local electrical codes. The junction box is thermally protected and UL-certified.
- Select Color Temperature: Before mounting, use the slider switch on the junction box to select your desired color temperature (2700K, 3000K, 3500K, 4000K, or 5000K).
- Connect the Light: Connect the light fixture to the junction box cable.
- Mount the Light: Use the spring clips to fix the light securely into the ceiling hole. The ultra-thin design requires only 2 inches of ceiling space.

Figure 2: Step-by-step guide for installing the recessed light.
Video 1: Official Adetu-USA video demonstrating the installation of the Square Recessed Lighting with 5CCT white options. This video shows the physical product, its components, and the connection process.
Video 2: Preview video demonstrating how a square light can be installed in a round hole, highlighting the unique design feature of the Adetu recessed lights.
Operating Instructions
Your Adetu LED Recessed Lighting offers flexible lighting options to suit any environment.
- Color Temperature Selection: The 5CCT (Correlated Color Temperature) feature allows you to choose from five distinct light colors: 2700K (soft white), 3000K (warm white), 3500K (neutral white), 4000K (cool white), and 5000K (daylight). Adjust this setting using the slider switch located on the junction box before final installation.
- Dimmable Functionality: The light supports 5%-100% smooth dimming and is compatible with most standard dimmers. This allows you to adjust the brightness to create the perfect ambiance for any occasion.

Figure 3: Visual representation of the five selectable color temperatures available.

Figure 4: Illustration of the 5%-100% stepless dimming capability.
Maintenance
The Adetu LED Recessed Lights are designed for long-lasting performance with a lifespan of up to 50,000 hours. Minimal maintenance is required.
- Cleaning: Ensure the power is off before cleaning. Gently wipe the light fixture with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Longevity: The new generation LED chips offer higher lumens and lower power consumption, contributing to the extended lifespan and reduced energy costs.
- Safety: The metal driver box and metal back cover are designed for better heat dissipation, enhancing the safety and durability of the product.

Figure 5: Diagram highlighting the safety and durable design features, including metal components for heat dissipation.
Troubleshooting
If you encounter any issues with your Adetu LED Recessed Lighting, please refer to the following common troubleshooting steps:
- Light Not Turning On: Check the electrical connections in the junction box. Ensure the circuit breaker is not tripped. Verify that the light is properly connected to the power source.
- Flickering Light: Ensure the dimmer switch is compatible with LED lights and is correctly installed. Check for loose wiring connections.
- Incorrect Color Temperature: Verify the slider switch on the junction box is set to the desired color temperature. If multiple lights are installed, ensure all switches are set consistently.
- Dimming Issues: Confirm that the dimmer switch is compatible with 5%-100% LED dimming. Some older dimmers may not work correctly with LED technology.
For persistent issues, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Adetu |
| Model Number | QFHY-4IN-12P-5CCTWHITE |
| Size | 4 Inch |
| Color | White |
| Material | Aluminum, Glass |
| Wattage | 10 watts |
| Brightness | 860 lumens |
| Color Temperature | 5CCT Selectable (2700K/3000K/3500K/4000K/5000K) |
| CRI | 90+ |
| Dimmable | 5%-100% Smooth Dimming |
| Lifespan | Up to 50,000 hours |
| Certifications | IC Rated, ETL Certified, Energy Star |
| Installation Type | Flush Mount |
| Item Dimensions (L x W x H) | 2.56"L x 2.56"W x 2.05"H |
| Included Components | Junction Box, Spring Clip, UL certified UL wire connectors |
Warranty Information
Please refer to the product packaging or contact Adetu customer service for detailed warranty information regarding your LED recessed lighting.
Customer Support
For technical assistance, troubleshooting, or any inquiries regarding your Adetu product, please contact our customer support team. Contact details can typically be found on the product packaging or our official website.