Introduction
This manual provides detailed instructions for the operation and maintenance of your Tuya WiFi 15-in-1 Air Quality Detector. This device is designed to provide a comprehensive solution for monitoring indoor air quality, integrating multiple test functions for various parameters. Please read this manual thoroughly before using the product to ensure safe and effective operation.
The 15-in-1 air quality tester integrates multiple test functions for measuring AQI, CO, CO2, PM0.3, PM1.0, PM2.5, PM10, formaldehyde, TVOC, temperature, humidity, as well as time display, alarm, timer and countdown timer functions. It supports customizable alarm limits, sleep modes, and allows for detailed historical data exploration on air parameters by day, month, or year. Its multifunctional design also supports temperature unit switching and versatile timer settings, providing a complete way to constantly track indoor air quality.

Features
- Comprehensive Air Quality Test: Measures AQI, CO, CO2, PM0.3, PM1.0, PM2.5, PM10, formaldehyde, TVOC, temperature, and humidity.
- TFT Color Display & APP Control: Features a 2.8-inch TFT color screen for clear data display and real-time monitoring via the Tuya APP.
- Personalized Settings & Historical Data Checking: Customize alarm limits, set sleep modes, and review historical air parameter data (daily, monthly, yearly).
- Warning & Visual Alert: Emits emergency beeping alarms and changes interface color (green for good, orange for warning, red for bad) when measured data exceeds set standards.
- Intelligent Linkage Control: Utilizes high-end infrared and laser sensors for accuracy and can link with smartplugs to control external devices based on air quality readings (e.g., exhaust fans).
- Additional Functions: Includes time display, alarm, timer, and countdown timer functions, with support for temperature unit switching.

Package Contents
Please check the package contents upon unboxing:
- 1 x Air Quality Tester
- 1 x USB Type-C Charging Cable
- 1 x Guideline (User Manual)
Setup
1. Initial Charging
Before first use, fully charge the device using the provided USB Type-C cable and a standard 5VDC, 1A USB power adapter (not included). The charging port is located on the side of the device.

2. Power On/Off
- To Power On: Press and hold the power button (usually located on the side) for a few seconds until the TFT display lights up.
- To Power Off: Press and hold the power button again for a few seconds until the display turns off.
3. App Connection (Tuya Smart App)
To utilize the full range of features, including remote monitoring and personalized settings, connect your device to the Tuya Smart App:
- Download the 'Tuya Smart' app from your smartphone's app store (iOS or Android).
- Register or log in to your Tuya Smart account.
- Ensure your Air Quality Detector is powered on and within range of your WiFi network.
- In the Tuya Smart app, tap '+' to add a new device.
- Follow the in-app instructions to connect your Air Quality Detector to your home WiFi network. This typically involves putting the device into pairing mode (refer to the device's display or quick start guide for specific pairing instructions).
- Once connected, you can view real-time data, customize settings, and manage the device remotely.

Operating Instructions
1. Understanding the Display
The 2.8-inch TFT color screen provides a clear overview of all measured parameters. The display typically shows:
- Date and Time: Current date and time.
- Temperature & Humidity: Current ambient temperature and relative humidity.
- AQI (Air Quality Index): An overall indicator of air quality.
- Specific Gas Readings: CO2 (Carbon Dioxide), CO (Carbon Monoxide), HCHO (Formaldehyde), TVOC (Total Volatile Organic Compounds).
- Particulate Matter Readings: PM2.5, PM1.0, PM10, PM0.3 (various sizes of airborne particulate matter).
- Battery Indicator: Shows current battery level.
- WiFi Status: Indicates connection status.

2. Alarm and Visual Alerts
The device is equipped with an intelligent alert system:
- Thresholds: You can set custom alarm thresholds for various air quality parameters via the Tuya Smart App.
- Audible Alarm: If any measured data exceeds the set standard, the device will emit three emergency beeping alarms.
- Visual Indicator: The interface color changes to provide an intuitive visual warning:
- Green: Good air quality.
- Orange: Warning, air quality is deteriorating.
- Red: Bad air quality, immediate attention recommended.
3. Timer and Countdown Functions
The device includes versatile timer and countdown functions:
- Access these functions through the device's menu or the Tuya Smart App.
- Set alarms, countdowns, or use the stopwatch feature as needed.

4. Tuya App Advanced Functions
The Tuya Smart App enhances your experience with:
- Remote Management: Monitor air quality from anywhere.
- Historical Data: View detailed graphs and logs of air parameters over time.
- Sleep Modes: Configure the device to operate silently or with reduced display brightness during specific hours.
- Temperature Unit Switching: Toggle between Celsius and Fahrenheit.
- Intelligent Linkage: Set up automation rules with other smart home devices (e.g., turn on an air purifier when PM2.5 levels are high).
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Sensor Care: Avoid blocking the ventilation openings on the device, as this can affect sensor accuracy. Keep the device away from dust, lint, and other airborne particles that could clog the sensors.
- Storage: Store the device in a cool, dry place when not in use. Avoid extreme temperatures and humidity.
- Battery: For optimal battery life, avoid fully discharging the battery frequently. Charge the device regularly.

Troubleshooting
- Device not turning on: Ensure the device is fully charged. Connect it to a power source and try again.
- Inaccurate readings: Ensure the device is placed in an open area, away from direct airflow, heat sources, or strong chemical odors. Allow it to stabilize for a few minutes after powering on. Clean the ventilation openings if necessary.
- App connectivity issues: Check your WiFi connection. Ensure the device is within range of your router. Restart both the device and your router, then try reconnecting via the Tuya Smart app.
- Display not responding: Try restarting the device by holding down the power button. If the issue persists, ensure the battery is charged.
Specifications
| Parameter | Value |
|---|---|
| Name | Air Quality Tester |
| Material | Plastics |
| Model | MT15-B, MT15-W (optional) |
| Battery | 2000mAh polymer lithium battery |
| Working Voltage | 3.7V |
| Working Current | 260mA |
| CO2 Detection Ranges | 400-5000PPM, ±50 ±5%PPM |
| CO2 Detection Sensitivity | 1PPM |
| CO Detection Ranges | 0-999PPM, ±10PPM |
| CO Detection Sensitivity | 1PPM |
| TVOC Detection Ranges | 0-9.99mg/m³, ±0.05mg/m³ |
| HCHO Detection Ranges | 0-1.99mg/m³, ±0.05mg/m³ |
| PM2.5 Detection Ranges | 0-999μg/m³, ±10μg/m³ |
| PM2.5 Detection Sensitivity | 1μg/m³ |
| PM1.0 Detection Ranges | 0-999μg/m³, ±10μg/m³ |
| PM10 Detection Ranges | 0-999μg/m³, ±10μg/m³ |
| PM0.3 Detection Ranges | 0-999μg/m³, ±10μg/m³ |
| Temperature Measurement Ranges | -10~50°C |
| Temperature Measurement Error | ±2℃ |
| Humidity Measurement Ranges | 0%-99% RH |
| Humidity Measurement Error | ±5%RH |
| Charging | 5VDC, 1A Type-C interface |
| Item Size | 90 * 35 * 70mm / 3.54 * 1.38 * 2.76in |
| Item Weight | 165g / 5.82ounce |
| Package Size | 141 * 97 * 48mm / 5.55 * 3.82 * 1.89in |
| Package Weight | 185g / 6.53ounce |

User Tips
No specific user tips were available from reviews or Q&A for this product. However, general tips for air quality monitors include:
- For best accuracy, place the monitor in a central location in the room, away from windows, doors, and vents.
- Allow the device to run for at least 5-10 minutes after powering on to get stable readings.
- Regularly check the Tuya Smart app for firmware updates to ensure optimal performance and new features.
Warranty and Support
For warranty information, technical support, or any questions regarding your Tuya WiFi 15-in-1 Air Quality Detector, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





