1. Introduction
This manual provides essential information for the safe and effective use of your YUNMAI PRO Smart Body Fat Scale. Please read it thoroughly before first use and retain it for future reference.
The YUNMAI PRO Smart Body Fat Scale is designed to measure various body composition metrics, including weight, body fat percentage, muscle mass, and BMI, providing a comprehensive overview of your health and fitness progress. It connects via Bluetooth to the YUNMAI app for data tracking and analysis.
2. Safety Information
- Do not use this device if you have a pacemaker or other internal medical device.
- Do not use this device if you are pregnant.
- The scale surface can be slippery when wet. Ensure the surface is dry before stepping on.
- Keep the scale away from strong electromagnetic fields.
- Do not jump on the scale or drop heavy objects on it.
- This scale is designed for household use only and is not intended for medical diagnosis or treatment.
- Maximum weight limit: 180 kg (396 lbs).
3. Package Contents
- YUNMAI PRO Smart Body Fat Scale
- User Manual (this document)
- USB Charging Cable
4. Setup
4.1 Charging the Scale
Before first use, ensure the scale is fully charged. Connect the provided USB charging cable to the charging port on the side or back of the scale and to a standard USB power adapter (not included). The LED display will indicate charging status.
4.2 App Installation
The YUNMAI PRO Smart Body Fat Scale requires the YUNMAI app for full functionality and data tracking. The app is compatible with iOS and Android devices.
- Search for "YUNMAI" in the Apple App Store (for iOS) or Google Play Store (for Android).
- Download and install the YUNMAI app.
- Create a new user account or log in if you already have one.

Image: The YUNMAI app integrates with popular fitness platforms like Apple Health, Google Fit, and Fitbit.
4.3 Pairing the Scale with the App
- Ensure Bluetooth is enabled on your smartphone.
- Open the YUNMAI app.
- Step onto the scale briefly to activate it. The display will light up.
- The app should automatically detect and connect to the scale. Follow any on-screen prompts within the app to complete the pairing process.
- Once paired, your measurements will synchronize with the app after each weigh-in.
5. Operating Instructions
5.1 Taking a Measurement
- Place the scale on a hard, flat surface. Avoid carpets or uneven floors, as this can affect accuracy.
- Ensure your feet are clean and dry.
- Step onto the scale barefoot, standing still with your feet evenly distributed over the ITO coating sensors.
- The scale will display your weight first, then cycle through other body composition metrics.
- For full body composition analysis, ensure the YUNMAI app is open and connected via Bluetooth. Your data will automatically sync.

Image: The YUNMAI PRO scale displaying weight, with the companion app showing detailed body analysis.

Image: The scale provides 13 key body metrics for comprehensive analysis.
5.2 Understanding Measurements
The YUNMAI app provides detailed explanations for each metric. Here are some common ones:
- Weight: Your total body mass.
- BMI (Body Mass Index): A measure of body fat based on height and weight.
- Body Fat %: The percentage of your total body weight that is fat.
- Muscle Mass: The total weight of muscle in your body.
- Water %: The percentage of your total body weight that is water.
- Bone Mass: The total weight of bone in your body.
- Visceral Fat Index: An indicator of fat stored around your organs.

Image: Track your progress over time with detailed graphs in the YUNMAI app.

Image: The YUNMAI app provides a comprehensive body analysis report to help with health decisions.
5.3 Multi-User Management
The YUNMAI PRO scale supports up to 16 users, automatically recognizing individuals and syncing data to their respective profiles within the app. This feature is ideal for families or shared use.
- Each user should create their own profile within the YUNMAI app.
- Ensure each user enters their correct personal information (age, height, gender) for accurate body composition analysis.
- When a user steps on the scale, the app will attempt to identify them based on their previous measurements. If multiple users have similar weights, the app may prompt you to select the correct profile.

Image: The YUNMAI app supports up to 16 users with auto-recognition for family or shared use.
6. Maintenance and Care
- Clean the scale surface with a damp cloth and mild detergent. Do not use abrasive cleaners or immerse the scale in water.
- Store the scale in a cool, dry place.
- Avoid exposing the scale to direct sunlight or extreme temperatures.
- The scale features a durable tempered glass surface. Handle with care to prevent damage.

Image: The YUNMAI PRO scale features durable tempered glass and anti-slip pads for stability.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Scale does not turn on. | Low battery or no power. | Charge the scale using the provided USB cable. |
| Inaccurate measurements. | Scale on uneven surface; feet not properly placed; scale not calibrated. | Place scale on a hard, flat surface. Ensure bare feet are centered on sensors. Step on and off quickly to calibrate to zero before weighing. |
| Cannot connect to app/Bluetooth. | Bluetooth off; app not open; scale not activated; interference. | Ensure Bluetooth is on. Open YUNMAI app. Step on scale to activate. Move closer to scale. Restart phone/app. |
| Body composition data not showing. | Not standing barefoot; feet not making proper contact with sensors. | Ensure you are standing barefoot with feet centered on the ITO coating sensors. Ensure feet are clean and dry. |

Image: The scale uses four high-precision sensors and BIA technology for accurate measurements.

Image: ITO coating technology ensures larger sensor coverage for accurate readings across different foot sizes.
8. Specifications
- Model: YUNMAI PRO
- Dimensions: 30 x 30 x 2 cm (11.8 x 11.8 x 0.79 inches)
- Weight: 1.7 kg (3.75 lbs)
- Weight Limit: 5 - 180 kg (11 - 396 lbs)
- Measurement Increments: 0.05 kg (0.11 lbs)
- Power Source: 1 Lithium-polymer battery (included)
- Connectivity: Bluetooth 4.0
- Material: Tempered Glass, Acrylic
- Color: Black
- Supported Users: Up to 16
9. Warranty and Support
YUNMAI products are designed and manufactured to the highest quality standards. For warranty information and technical support, please refer to the official YUNMAI website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
For further assistance, visit the official YUNMAI support page or contact their customer service team.





