1. Introduction
Thank you for choosing the wolezek BL-J20A Grow Lights for Indoor Plants. This product is designed to provide optimal lighting conditions for your indoor plants, promoting healthy growth, flowering, and fruiting. Featuring full spectrum LEDs, a flexible gooseneck with a sturdy clip, and intelligent timer functions, this grow light offers a convenient and efficient solution for your indoor gardening needs.
2. Product Features
- Full Spectrum White Light: Each light bar is equipped with 2 x 660nm red LEDs, 2 x 3000K warm white LEDs, and 16 x 6000K white LEDs, mimicking natural sunlight to support all plant growth stages.
- Cycle Timer Function: Features a circular memory timer with three settings: 6 hours, 12 hours, and 16 hours. The light automatically turns on and off daily according to your chosen schedule, eliminating the need for manual operation.
- Easy Installation: Equipped with a non-slip clamp and a 360-degree adjustable gooseneck, allowing for flexible positioning and secure attachment to various surfaces.
- High Efficiency LED: Consumes approximately 10 watts of power, providing light output equivalent to a 50W traditional grow light, ensuring energy efficiency.
- 3 Lighting Modes: Offers different light spectrum combinations to suit various plant needs.
- 5-Level Dimmable Brightness: Adjustable brightness levels from 20% to 100% to cater to different plant growth phases and light intensity requirements.
3. Package Contents
Please check the package contents upon receipt to ensure all items are present:
- wolezek Grow Light with Clip (x1)
- Power Adapter (x1)
- User Manual (x1)
4. Safety Instructions
To ensure safe operation and prevent damage, please read and follow these safety instructions carefully:
- Do not expose the product to water or high humidity. This product is not water-resistant.
- Ensure the power adapter is compatible with your local voltage and power outlets.
- Do not disassemble or modify the product. Unauthorized modifications may result in electric shock or fire.
- Keep the grow light away from flammable materials.
- Avoid direct eye exposure to the LED lights for extended periods.
- Unplug the power adapter from the outlet when not in use or before cleaning.
- This product is intended for indoor use only.
5. Setup
Follow these steps to set up your wolezek Grow Light:
- Attach the Clamp: Securely attach the non-slip clamp to a stable surface such as a desk, shelf, or window sill. Ensure the surface thickness is within the clamp's capacity (e.g., up to 2.5 inches).
- Position the Lights: Use the 360-degree adjustable goosenecks to position the light bars over your plants. Adjust the height and angle to ensure optimal light coverage for all plants.
- Connect Power: Plug the USB connector into the provided power adapter, then plug the adapter into a standard electrical outlet.


6. Operating Instructions
The grow light is controlled via an inline control panel on the power cord. The control panel features buttons for power, timer, light mode, and brightness adjustment.

Power On/Off
Press the Power Button (
) to turn the grow light on or off.
Light Spectrum Modes
Press the Mode Button (
) to cycle through the three available lighting modes:
- Full Spectrum: All LEDs (red, warm white, white) are active, providing a balanced light for all growth stages.
- Red + Warm White: Focuses on red and warm white light, ideal for flowering and fruiting.
- White Only: Provides pure white light (6000K), suitable for general plant growth and chlorophyll synthesis.

Brightness Adjustment
Press the Brightness Button (
) to adjust the light intensity. There are 5 dimmable levels (20%, 40%, 60%, 80%, 100%) to choose from.
Timer Function
Press the Timer Button (
) to set the automatic on/off cycle. Available options are 6 hours, 12 hours, or 16 hours. Once set, the light will automatically turn on for the selected duration and then turn off, repeating the cycle every 24 hours.

7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your grow light:
- Cleaning: Gently wipe the light bars and control panel with a soft, dry cloth. Do not use abrasive cleaners or immerse any part of the product in water.
- Storage: If storing the grow light for an extended period, unplug it, clean it, and store it in a cool, dry place away from direct sunlight.
8. Troubleshooting
If you encounter any issues with your wolezek Grow Light, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | Power adapter not connected properly or power outlet issue. | Check if the power adapter is securely plugged into both the light and the wall outlet. Test the outlet with another device. |
| Timer function not working. | Timer not set correctly or power interruption. | Ensure the timer is set by pressing the timer button until the desired duration (6H/12H/16H) is indicated. If power was interrupted, reset the timer. |
| Lights are dim or flickering. | Brightness level set too low or power supply issue. | Increase the brightness level using the brightness adjustment button. Ensure the power adapter is functioning correctly. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | BL-J20A |
| Light Source Type | LED |
| Number of Light Sources | 40 LEDs per bar |
| LED Configuration | 2x 660nm Red, 2x 3000K Warm White, 16x 6000K White (per bar) |
| Wattage | 10 watts |
| Power Source | Corded Electric (USB Connectivity) |
| Voltage | 240V |
| Product Dimensions | 13.5"D x 5.43"W x 1.47"H |
| Item Weight | 1 Pound |
| Material Type | Aluminum |
| Mounting Type | Tabletop (Clip-on) |
| Indoor/Outdoor Usage | Indoor use only |
| Control Method | Push Button (Inline Controller) |
| Additional Features | Dimmable, Auto ON/OFF Timer (6/12/16H) |
10. Warranty and Support
The wolezek BL-J20A Grow Light comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use.
For any questions, concerns, or technical support, please contact our customer service team. We provide 24/7 customer service to assist you. If you are not satisfied with our product or encounter any problems, please chat with us via Amazon, and we will provide satisfactory service for you.