Smart Life MT15/MT29 15-in-1 Air Quality Monitor User Manual

1. Introduction

The Smart Life MT15/MT29 Air Quality Monitor is an advanced environmental monitoring device designed to provide real-time data on various air quality parameters. This device helps you maintain a healthy indoor environment by detecting and displaying key indicators, offering smart features through its companion mobile application.

Figure 1: Smart Life MT15/MT29 Air Quality Monitor and companion app.

Key Features:

• Comprehensive Detection: Monitors 11 environmental parameters including CO2, CO, HCHO, TVOC, PM0.3, PM1.0, PM2.5, PM10, temperature, humidity, and AQI.
• Smart Connectivity: Equipped with Tuya Smart WiFi APP for remote monitoring, intelligent scene automation, and historical data viewing.
• User-Friendly Display: Features a 2.8-inch TFT display for clear, real-time data visualization.
• Alarm Functions: Includes numerical and sound alarms with user-definable thresholds.
• Integrated Tools: Offers date and time display, alarm clock, timer, and chronograph functions.
• Portable Design: Compact and lightweight with a built-in 2000mAh Li-Po battery for extended use.
• Self-Calibrating: Ensures accurate data readings.

Figure 2: Visual representation of the 15 detection functions.

Model Differences:

The MT15 and MT29 models share the same functionality. The primary difference lies in the type of sensors used:

• MT15: Utilizes high-quality infrared and laser sensors for CO2 and PM detection, offering high precision and data consistency.
• MT29: Employs infrared sensors for PM detection and semiconductor sensors for other parameters. It provides approximate data ranges and is designed for cost-effectiveness and multi-functional use.

2. Setup

2.1 Package Contents

Before you begin, ensure all items are present in your package:

• 1 x Air Quality Detector (MT15 or MT29)
• 1 x Type-C Data Cable
• 1 x User Manual

Figure 3: Package contents including the monitor, Type-C cable, and manual.

2.2 Charging the Device

The device is powered by a built-in 2000mAh Li-Po battery. To charge:

1. Connect the provided Type-C data cable to the charging port on the device.
2. Connect the other end of the cable to a DC5V power adapter (not included).
3. The battery indicator on the display will show charging status.

2.3 Initial Power On

1. Press and hold the power button for more than 3 seconds to turn on the device.
2. The device will undergo a preheating process for approximately 60 seconds.
3. After preheating, the detection will begin, and the current air quality parameters will be displayed on the screen.

2.4 App Installation and WiFi Pairing

The device can be connected to the Tuya Smart WiFi APP (also referred to as Graffiti Intelligence APP) for enhanced features.

1. Install the App: Search for "Graffiti Smart App" or "Tuya Smart" in your phone's app market (e.g., Google Play Store, Apple App Store) and install it. Register an account after installation.
2. Enable WiFi Pairing Mode on Device: In an area with a stable WiFi signal, within 2 minutes after turning on the device, press the power button 5 times. The WiFi symbol on the device display will flash, indicating that the pairing link is in progress.
3. Connect via App: Open the mobile app, click "Add Device", and search for the WiFi device. Once discovered, click to add it. Choose your WiFi network and enter the password. Click "Next" to complete the pairing connection.

Upon successful connection, the WiFi symbol on the device will stop flashing. The app allows for remote monitoring, setting alarm values, sleep time, timer, and viewing historical data.

Figure 4: Step-by-step guide for WiFi connection and app setup.

Figure 5: Detector and app interface showing various parameters.

2.5 Device Placement

The monitor can be placed in various locations to suit your needs:

• On a flat surface like a table.
• Mounted on a wall using the integrated hanging holes on the back.
• Attached to a refrigerator or other magnetic surfaces (if applicable to your model).

Figure 6: Examples of monitor placement in different environments.

3. Operating Instructions

3.1 Display Overview

The 2.8-inch TFT display shows real-time readings for all detected parameters, along with date, time, and battery status.

Figure 7: Monitor displaying various parameters and clock functions.

3.2 Button Operations

The power button on the device serves multiple functions:

1. Power On/Off: Press and hold for more than 3 seconds.
2. Switch Temperature Unit: Press once to switch between Celsius (°C) and Fahrenheit (°F).
3. Enable/Disable Timer: Press twice to access or enable the timer function.
4. Enter/Exit Time/Alarm/Timer Display: Press three times to cycle through time, alarm, and timer displays.
5. Enter Calibration Mode: Press four times to enter the 120-second parameter calibration mode.
6. Enter WiFi Pairing Mode: Press five times to enter WiFi pairing mode (WiFi icon flashes).

Figure 8: Conventional use and button operation guide.

3.3 App Functions (Tuya Smart APP)

Once connected to the Tuya Smart APP, you can:

• Remote Monitoring: View all 11 environmental parameters in real-time from your smartphone.
• Historical Data: Access and view historical record curves for all indicators (temperature, humidity, CO2, PM2.5, PM10, TVOC, PM0.3, PM10, CO, HCHO) by day, month, or year.
• Intelligent Scene Automation: Customize intelligent living scenarios, such as automatically turning on an air purifier when PM2.5 levels are high.
• Alarm Thresholds: Set custom alarm thresholds for each parameter.
• Device Settings: Adjust temperature units (C/F), turn on/off sound alarms, set sleep time, and configure timers.

Figure 9: App interface showing historical data graphs.

3.4 Parameter Alarms

The device features parameter alarms that trigger when detected values exceed predefined thresholds. Default alarm values are:

• CO2: 1500PPM
• CO: 200PPM
• PM2.5: 100µg/m³
• HCHO: 0.08mg/m³

When a parameter exceeds its alarm value, the device will trigger three rapid buzzer alarms. The display color for the affected parameter will also change (e.g., normal green, orange warning, red alarm).

Figure 10: Default alarm values and visual indicators.

Figure 11: Reference for Environmental Pollution Index with color-coded ranges.

4. Maintenance

4.1 Cleaning

To ensure optimal performance and longevity, keep the device clean:

• Wipe the device with a soft, dry cloth.
• Do not use abrasive cleaners, solvents, or harsh chemicals.
• Avoid getting moisture into the sensor openings or charging port.

4.2 Battery Care

• Charge the device regularly to maintain battery health.
• Avoid fully discharging the battery frequently.
• The battery life is approximately 5-7 hours (5 hours with screen always on, 7 hours in screen-off mode).

4.3 Temperature Calibration

If you notice inaccuracies in temperature readings, you can manually calibrate the device:

1. Press the power button 7 times to enter the manual temperature calibration page.
2. On this page, press the button once for "+" (increase temperature) and double-click for "-" (decrease temperature).
3. Adjust the temperature as needed.

Important Note: It is recommended not to calibrate the temperature while the device is charging, as the device has a temperature compensation plan during charging which may affect calibration accuracy.

5. Troubleshooting

5.1 Inaccurate Temperature Readings

If the temperature reading appears inaccurate, perform a manual temperature calibration as described in Section 4.3.

5.2 WiFi Connection Issues

• Ensure your device is within range of a strong 2.4GHz WiFi signal.
• Verify that you have entered the correct WiFi password in the app.
• Try re-entering WiFi pairing mode on the device (press power button 5 times) and re-attempting connection through the app.
• Restart both the monitor and your smartphone.

5.3 Device Not Turning On

• Ensure the device is sufficiently charged. Connect it to a power source using the Type-C cable and allow it to charge for at least 30 minutes before attempting to power on again.
• Press and hold the power button for more than 3 seconds.

5.4 Buzzer Alarm Not Sounding

• Check the app settings to ensure the sound alarm is enabled.
• Verify that the parameter thresholds are set correctly and the detected levels are exceeding them.

6. Specifications

Figure 12: Measurement ranges and sensor details.

Figure 13: Device dimensions.

7. User Tips

• Optimal Placement: For accurate readings, place the monitor in a central location within the area you wish to monitor, away from direct drafts, heat sources, or open windows.
• App Integration: Fully utilize the Tuya Smart APP for remote monitoring, historical data analysis, and setting up intelligent automation scenes to enhance your smart home experience.
• Regular Charging: To ensure continuous monitoring, establish a routine for charging the device, especially if you rely on its portability.
• Temperature Calibration: If you suspect temperature inaccuracies, use the manual calibration feature (press power button 7 times) but avoid calibrating while the device is charging.
• Understanding Readings: Refer to the Environmental Pollution Index table (Figure 11) to interpret the significance of different parameter levels and their corresponding color warnings.

Figure 14: The monitor is suitable for various environments including offices, baby rooms, greenhouses, and cars.

Figure 15: Enjoy a healthier indoor environment with continuous monitoring.

8. Warranty and Support

For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific contact information and warranty terms.

9. Product Video Overview

Watch this video for a quick overview of the MT29 model's features and functionalities.