1. Introduction
Thank you for choosing the YUNLEX Adjustable Night Light. This product is designed to provide soft, ambient illumination for various spaces in your home, enhancing comfort and safety during nighttime hours. With its intelligent light sensor and adjustable brightness levels, it offers a convenient and energy-efficient lighting solution.
Please read this manual carefully before use to ensure proper operation and to maximize the lifespan of your device. Keep this manual for future reference.
2. Safety Instructions
To ensure safe operation and prevent damage, please observe the following safety precautions:
- Do not disassemble, repair, or modify the device. Unauthorized modifications may cause electric shock, fire, or damage to the product.
- Do not expose the device to water or excessive moisture. This product is intended for indoor use only.
- Do not insert foreign objects into the device.
- Ensure the power outlet is clean and free from debris before plugging in the night light.
- Keep the device away from heat sources, direct sunlight, and flammable materials.
- This product is not a toy. Keep out of reach of children and pets.
- Unplug the device from the power outlet before cleaning.
- The casing is made of flame-retardant ABS material for enhanced safety.
3. Product Features
The YUNLEX Adjustable Night Light offers several key features for optimal performance:
- Adjustable Brightness: This plug-in night light features 3 brightness levels (low-medium-high) for various uses. It can be bright enough to illuminate your entire room – without needing to turn on the main light – and dim enough to allow you to sleep soundly. Simply slide the switch on top for the best experience, without needing to readjust every time.
- Soft, Indirect Illumination: Our lamp beads are fully shaded by superior anti-glare material. Light is emitted by reflection from the outer edge, not directly from the beads. Thus, the light is very soft, non-dazzling to the eyes, whether you are sleeping or walking at night. Particularly suitable for children, the elderly, and other light-sensitive individuals.
- Smart Dusk-to-Dawn Sensor: Thanks to its integrated light sensor, our smart LED night light precisely detects the light in your room. It automatically turns on at dusk or when the room is dark, and turns off at dawn or when the room is bright. You will never need to manually turn it on or off.
- Compact and Space-Saving Design: Its slim and non-bulky design ensures it does not block the second outlet, allowing other devices to be plugged in simultaneously. Its compact size integrates seamlessly with modern interior design.
- Reliable and Versatile Application: Constructed with a high-quality flame-retardant ABS casing and overcurrent protection, ensuring long-term safety and durability. The low light setting is suitable for bedrooms, children's rooms. The high light setting is suitable for hallways, garages, stairs, kitchens, living rooms, etc.

Image: The YUNLEX night light plugged into an outlet, demonstrating that it leaves the second outlet free for other devices like charging a phone.

Image: A close-up view of the YUNLEX night light, highlighting its soft, non-dazzling amber glow, achieved through indirect light reflection.
4. Setup
Setting up your YUNLEX Night Light is quick and easy:
- Unpack: Carefully remove the night light from its packaging.
- Choose Location: Select a standard wall outlet in the desired area. Ensure the location is not obstructed by furniture or curtains, which could interfere with the light sensor's operation.
- Plug In: Insert the night light directly into the wall outlet. The compact design ensures it will not block the second outlet.

Image: Two YUNLEX night lights, illustrating their compact design and how they appear when plugged into an outlet.

Image: The YUNLEX night light discreetly plugged into a wall outlet in a living area, demonstrating its unobtrusive presence.
5. Operating Instructions
The YUNLEX Night Light operates automatically and offers adjustable brightness:
- Automatic Operation (Dusk Sensor): The built-in light sensor detects ambient light levels.
- When the room becomes dark (e.g., at dusk or lights off), the night light will automatically turn on.
- When the room becomes bright (e.g., at dawn or lights on), the night light will automatically turn off.
- Adjusting Brightness: Locate the slide switch on the top of the night light.
- Slide the switch to select one of the three brightness levels: Low, Medium, or High.
- Choose the brightness that best suits your needs for the specific environment.

Image: Illustration of the three adjustable brightness levels (Low, Medium, High) and the slide switch for selection.

Image: Visual representation of the automatic on/off function, where the light turns off in bright conditions (sun icon) and on in dark conditions (moon icon).
6. Maintenance
The YUNLEX Night Light requires minimal maintenance:
- Cleaning: To clean the device, first unplug it from the power outlet. Use a soft, dry cloth to wipe the surface. Do not use abrasive cleaners, solvents, or immerse the device in water.
- Storage: If storing the night light for an extended period, unplug it and keep it in a cool, dry place away from direct sunlight.
- No User-Serviceable Parts: There are no user-serviceable parts inside the night light. Do not attempt to open or repair the device.
7. Troubleshooting
If you encounter any issues with your YUNLEX Night Light, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on in the dark. |
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| Light does not turn off in bright conditions. |
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| Brightness level is not as expected. | Brightness switch is set incorrectly. | Adjust the slide switch on the top of the night light to your desired brightness level (Low, Medium, High). |
If the problem persists after trying these solutions, please contact YUNLEX customer support.
8. Specifications
| Attribute | Value |
|---|---|
| Brand | YUNLEX |
| Model Number | NLS21 |
| ASIN | B0B6V2SKFC |
| Dimensions (L x W x H) | 5.8 x 6.8 x 6.8 cm (2.3 x 2.7 x 2.7 inches) |
| Weight | 100 grams (0.22 lbs) |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Light Source Type | LED |
| Voltage | 2 Volts (AC100-240V, 50/60Hz input) |
| Luminous Flux | 16 lm |
| Color Temperature | 1600 Kelvin (Amber) |
| Special Features | Adjustable Intensity, Dimmable, Automatic On/Off, 3 Adjustable Brightness Levels, Indirect Light, Baby Night Light |
| Installation Type | Wall Mount (Plug-in) |
| Switch Style | Tactile (Slide Switch) |
| Components Included | Shade |

Image: Detailed view of the back of the YUNLEX night light, displaying its dimensions and product label with model information.
9. Warranty and Support
Warranty Information: This product is typically covered by a 30-day refund/replacement policy from the date of purchase. Please refer to your retailer's specific return policy for details.
Customer Support: For any questions, technical assistance, or warranty claims, please contact YUNLEX customer support directly:
- Email: support@yunlex.com
- Seller: YUNLEX-EU
Please have your product model number (NLS21) and ASIN (B0B6V2SKFC) ready when contacting support.