Product Overview
The YUNLEX NLS21 Plug-in Night Light is a versatile lighting solution designed for various indoor spaces. It features three intelligent sensor modes, dimmable brightness, and a compact design that keeps your second outlet free. This night light provides a soft, indirect glow, making it ideal for bedrooms, bathrooms, hallways, and kids' rooms.

Image: YUNLEX NLS21 Night Light, showcasing its compact design and warm amber illumination when plugged into a standard wall outlet. The light is designed to leave the second outlet free for other devices.
Setup
- Unpack: Carefully remove the night light from its packaging.
- Inspect: Check the device for any visible damage.
- Plug In: Insert the night light into a standard wall outlet. For optimal use and to keep the second outlet free, it is recommended to plug it into the top receptacle.
- Initial Power On: The night light will illuminate briefly upon plugging in.
Operating Instructions
Sensor Modes
The YUNLEX NLS21 offers three distinct sensor modes, selectable via the slider switch located on the top of the device. Each mode is designed to cater to different lighting needs and environments.

Image: Visual representation of the three thoughtful sensor modes available on the YUNLEX night light, illustrating their distinct functionalities.
- Owl Mode:
In this mode, the night light provides a soft, low brightness when it's dark. When motion is detected, the brightness increases to a higher level. After 60 seconds of no activity, the light will dim back to its low brightness setting. This mode is ideal for areas like hallways, bathrooms, and kitchens where you need temporary brighter illumination without full light.

Image: Detailed visual guide to the Owl Mode, demonstrating its adaptive brightness based on ambient light and motion detection.
- Light Sensor Mode:
The night light automatically turns on at dusk and turns off at dawn. This mode is perfect for bedrooms or other spaces requiring continuous low lighting throughout the night without motion activation.
- Motion Sensor Mode:
In this mode, the night light will automatically turn on when motion is detected in the dark and will turn off after 60 seconds of inactivity. This is suitable for areas where constant lighting is not necessary, such as closets or short pathways.

Image: A visual comparison illustrating the functionality of Light Mode and Motion Mode, highlighting their automatic activation and deactivation based on environmental conditions.
Brightness Adjustment
The YUNLEX NLS21 offers flexible brightness control, supported across all three sensor modes.
- 5-Step Dimming (Short Touch): Briefly touch the touch button on the front of the night light to cycle through 5 preset brightness levels.
- Stepless Dimming (Long Touch): Press and hold the touch button to smoothly adjust the brightness from 1% to 100%. Release the button when the desired brightness is achieved.

Image: Illustration detailing the brightness adjustment methods, including short-touch for 5-level dimming and long-touch for stepless dimming.
Indirect Light Design
The night light features a double-layer design with secondary reflection, ensuring that the LED beads do not directly shine into the eyes. This provides a soft, cozy, and non-dazzling illumination, which is beneficial for maintaining sleep quality.

Image: The YUNLEX night light providing a cozy, warm, and indirect light in a bedroom setting, designed to be gentle on the eyes.
Decorative Stickers
Included with your night lights are fun stickers that allow for personalization. These stickers can be applied to the front of the night light to add a unique decorative touch when the light is not active during the day.

Image: The YUNLEX night light accompanied by a variety of fun stickers, offering a way to personalize the device and add a decorative element.
Official Product Video
Video: Official product video from YUNLEX Direct, demonstrating the multifunctional features of the Square Night Light NLS21MAM, including its sensor modes and brightness adjustment capabilities.
Maintenance
- Cleaning: Unplug the night light before cleaning. Wipe the surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: If storing the night light for an extended period, unplug it and keep it in a cool, dry place away from direct sunlight.
- Safety: Ensure the night light is not covered by curtains, furniture, or other objects that could obstruct its sensors or cause overheating.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Night light does not turn on. | No power; ambient light is too bright; incorrect mode selected. | Check if the outlet has power. Ensure the room is dark enough for the selected mode. Verify the slider switch is in the desired sensor mode. |
| Night light stays on during the day. | Light sensor is obstructed or faulty; incorrect mode selected. | Ensure the light sensor (small circle on the front) is not covered. Switch to Light Sensor Mode if continuous night-time illumination is desired. |
| Motion sensor is not working. | Motion sensor is obstructed; incorrect mode selected; insufficient darkness. | Ensure the motion sensor (center of the light) is clear. Confirm the night light is in Motion Sensor Mode or Owl Mode. Ensure the environment is dark enough for motion detection to activate. |
| Brightness adjustment is not responding. | Touch button issue; temporary glitch. | Ensure you are touching the correct area. Unplug the night light for 10 seconds and plug it back in to reset. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | NLS21 |
| Brand | YUNLEX |
| Dimensions (D x W x H) | 1.6" x 2.65" x 2.65" |
| Item Weight | 3.2 ounces |
| Light Source Type | LED |
| Power Source | Corded Electric (Plug-in) |
| Voltage | 120 Volts (AC) |
| Material | ABS Fire-Resistant Casing, Plastic |
| Sensor Modes | Owl Mode, Light Sensor Mode, Motion Sensor Mode |
| Dimming Options | 5-step dimming (short touch), Stepless dimming (long touch) |
| Special Features | Indirect Light, Compact Design, DIY Fun Stickers |
| Indoor/Outdoor Usage | Indoor Only |
| Annual Power Consumption | Less than 60 cents (based on 0.5W LED) |

Image: Detailed dimensions of the YUNLEX night light, highlighting its sleek and compact design that allows it to fit without blocking adjacent outlets.
Warranty and Support
For warranty information, technical support, or any inquiries regarding your YUNLEX NLS21 Night Light, please refer to the contact information provided on the product packaging or visit the official YUNLEX website. Keep your purchase receipt for warranty claims.
We are committed to providing high-quality products and excellent customer service.