Mewaii MEDO000LIW1816L16-A
Mewaii White Noise Sound Machine Baby User Manual
Model: MEDO000LIW1816L16-A
Introduction
Thank you for choosing the Mewaii White Noise Sound Machine. This device is designed to create a calming sleep environment for infants and children, featuring a variety of soothing sounds, a gentle night light, and smart app control. Please read this manual thoroughly before use to ensure proper operation and safety.
Important Safety Information
- Do not use this product as a toy.
- Limit noise exposure for children to prevent hearing damage.
- Always follow safety guidelines when handling electrical devices.
- Keep the device away from water and moisture.
- Use only the provided charging cable and adapter.
What's in the Box
Upon opening your Mewaii White Noise Sound Machine package, you should find the following items:
- Mewaii White Noise Sound Machine (Main Unit)
- Remote Control
- USB Charging Cable
- User Manual

Image: The Mewaii White Noise Sound Machine, a blue bunny-shaped device, shown with its digital clock and glowing ears, alongside a smartphone displaying its control application.
Setup Guide
1. Initial Charging
Before first use, fully charge the device using the provided USB cable. The charging indicator will show the charging status. A full charge provides up to 22 hours of use.
2. App Download and Pairing
- Download the "MeWaii App" from your smartphone's app store (available for iOS and Android).
- Open the app and follow the on-screen instructions to create an account or log in.
- Ensure your sound machine is powered on and in pairing mode (refer to the device's display or indicator light for pairing status).
- Within the app, select "Add Device" and choose your Mewaii White Noise Sound Machine from the list of discoverable devices.
- Follow any additional prompts to complete the pairing process.

Image: A smartphone screen showing the Mewaii app, which allows remote control of the sound machine's settings, with a sleeping baby and the sound machine in the background.
3. Placement
Place the sound machine on a stable, flat surface within a safe distance from the child's crib or bed. Ensure it is out of reach of children to prevent it from being used as a toy.
Operating Instructions
Power On/Off
Press and hold the power button (usually located on the back or bottom of the device) for 3 seconds to turn the unit on or off. A short press may toggle the display or light.
Sound Selection and Volume
The device offers 100 authentic sounds, including white noise, nature sounds, and lullabies. You can select sounds and adjust the volume using the physical buttons on the device or through the MeWaii App. The app also allows access to age-specific sound profiles.

Image: An illustration highlighting the 100 authentic nature sounds provided by the Mewaii sound machine, such as rain, birdsong, ocean waves, white noise, and lullabies.
Night Light Control
The integrated night light features 360° color-changing lights and 100-level dimming control. Adjust colors and brightness via the MeWaii App or dedicated light buttons on the device.
Cry Detection Feature
The built-in cry-detection sensor automatically plays soothing sounds when it detects a baby crying. It also sends real-time alerts to your phone via the MeWaii App, providing a cry record log.

Image: A visual explanation of the cry detection system, showing a baby sleeping, the sound machine responding to a cry, and the corresponding cry alerts on a smartphone app.
Additional Features
- Digital Alarm Clock: Set alarms through the app for various routines.
- Temperature Monitor: The device displays the room temperature.
- Child-Lock System: Activate the child lock via the app to prevent accidental changes by children.
- Remote App Control: Manage all functions (volume, sounds, light, settings) from your smartphone using the MeWaii App.
Maintenance
Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners, solvents, or immerse the device in water. Ensure the device is unplugged before cleaning.
Battery Care
To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in constant use. If storing for an extended period, charge the battery to approximately 50% and store in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or power issue. | Ensure the device is fully charged. Connect to a power source using the provided USB cable. |
| App cannot connect to the device. | Bluetooth/Wi-Fi issues, device not in pairing mode. | Ensure Bluetooth is enabled on your phone. Restart both the app and the sound machine. Check if the device is in pairing mode. |
| Cry detection not working or turning off. | Incorrect sensitivity settings, temporary glitch. | Adjust cry detection sensitivity in the MeWaii App. Restart the device. Ensure no obstructions are blocking the microphone. |
| Poor battery life. | High volume/brightness settings, aging battery. | Reduce volume and night light brightness. Ensure the device is fully charged before use. Battery life can vary with usage patterns. |
Specifications
- Product Dimensions: 6.3 x 5.51 x 4.33 inches
- Item Model Number: MEDO000LIW1816L16-A
- Batteries: 1 Nonstandard Battery (included)
- Material Type: Acrylonitrile Butadiene Styrene (ABS)
- Power Source: Battery Powered
- Item Weight: 1.13 pounds
- Color: Blue & Yellow
- Sound Options: 100 authentic sounds
- Battery Life: Up to 22 hours on a single charge
Warranty and Support
Mewaii products are designed with quality and customer satisfaction in mind. For warranty information, technical support, or any inquiries regarding your Mewaii White Noise Sound Machine, please contact Mewaii customer service through their official website or the contact information provided in your product packaging.
You can also visit the Mewaii Store on Amazon for more product information and support resources.
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