JUANJUAN PV28-CW 8-in-1 WiFi Air Quality Detector Instruction Manual

1. Introduction

The JUANJUAN PV28-CW is a versatile 8-in-1 WiFi Air Quality Detector designed to monitor various environmental parameters. This device simultaneously measures and displays concentrations of PM1.0, PM2.5, PM10, Carbon Dioxide (CO2), Total Volatile Organic Compounds (TVOC), Formaldehyde (HCHO), as well as ambient temperature and humidity. Featuring an intuitive LCD color display with automatic brightness adjustment, it ensures clear visibility of data. The detector supports mobile application (Tuya APP) control, offering functionalities like automatic sleep, proximity-based wake-up, and customizable parameter settings, including temperature unit switching (℃/℉). It is an ideal tool for assessing and managing air quality in diverse environments such as agricultural settings, greenhouses, production warehouses, material processing facilities, homes, and business offices.

Front view of the 8-in-1 Air Quality Monitor displaying CO2, PM2.5, HCHO, TVOC, temperature, and humidity readings, with 'Function 8 in 1 Air quality monitor' text. — Figure 1: Front view of the 8-in-1 Air Quality Monitor

2. Package Contents

Please check the package for the following items:

1 x Air Quality Monitor (Model: PV28-CW)
1 x Type-C Charging Cable
1 x Guideline (Instruction Manual)

Video 1: Unboxing and basic operation of the Air Quality Monitor, including powering on, switching display modes, connecting to the mobile app, and setting alarm values.

3. Product Overview and Features

The PV28-CW Air Quality Detector is equipped with advanced sensors and smart features to provide comprehensive air quality monitoring:

8-in-1 Monitoring: Measures PM1.0, PM2.5, PM10, CO2, TVOC, HCHO, Temperature, and Humidity.
High-Accurate Sensors: Utilizes NDIR infrared CO2 sensor, laser particle sensor, semiconductor sensor, optical sensor, and distance sensor for high sensitivity and stable performance.
LCD Color Display: Large display with automatic brightness adjustment for optimal visibility in varying light conditions.
Smart Sleep & Wake-up: Screen automatically turns off to save energy. The device can be woken up by waving a hand in front of it. Data continues to transmit to the cloud via WiFi during sleep.
Easy Calibration: Supports both manual (press multi-function button three times after 5-10 minutes of power-on) and automatic (after 24 hours of continuous operation) calibration.
Mobile APP Control (Tuya APP): Connects via WiFi to the Tuya APP for real-time data viewing, historical records, and parameter settings (e.g., alarm values, temperature units, screen sleep time).
AQI Air Quality Level Indication: Changes display color based on the Air Quality Index (AQI) for quick visual assessment of air conditions.
Efficient Heat Dissipation: Designed with numerous ventilation holes to ensure effective detection and prevent overheating.
Type-C Charging: Convenient USB Type-C interface for recharging.

Back view of the Air Quality Monitor highlighting the multi-function button, temperature and humidity sensor, and Type-C port. — Figure 2: Product back introduction with key components

Diagram listing twelve advantages of the Air Quality Monitor, including CO2, HCHO, TVOC, PM2.5, PM1.0, PM10 detection, automatic calibration, intelligent alarm, temperature/humidity detection, automatic brightness adjustment, and Type-C port. — Figure 3: Twelve key advantages of the Air Quality Monitor

Close-up of the self-developed NDIR CO2 sensor, detailing its sensitivity (1 PPM) and accuracy (±(50 + 5% Reading) PPM). — Figure 4: Self-developed NDIR CO2 Sensor specifications

Close-up of the independent PM2.5 particle sensor, detailing its sensitivity (1 µg/m³) and accuracy (±10 µg/m³ or ±10%). — Figure 5: Independent PM2.5 Particle Sensor specifications

4. Setup

4.1 Charging the Device

Before first use, ensure the device is fully charged. Connect the provided Type-C charging cable to the device's Type-C port and plug the other end into a 5V 2A USB power adapter (not included).

4.2 Power On/Off

Power On: Long press the multi-function button located on the back of the device. The LCD screen will light up and begin displaying readings.
Power Off: Long press the multi-function button again to turn off the device.

4.3 Initial Calibration

For accurate readings, perform an initial calibration:

Turn on the device and place it in a well-ventilated area for 5 to 10 minutes.
Press the multi-function button three times quickly to initiate manual calibration.
The device will also perform an automatic calibration after 24 hours of continuous power-on.

4.4 Mobile APP Connection (Tuya APP)

To utilize the smart features and online monitoring, connect the device to the Tuya APP:

Download the "Tuya Smart" or "Smart Life" app from your smartphone's app store.
Open the app and create an account or log in.
Ensure your device's WiFi is enabled and it is in pairing mode (usually indicated by a blinking WiFi icon on the detector's screen after initial power-on).
In the Tuya APP, search for nearby devices or manually add a new device (select "Air Detector" or similar from the sensor category).
Follow the on-screen instructions in the app to complete the connection process.

Screenshot of a mobile app displaying air quality data (CO2, PM2.5, PM1.0, PM10, HCHO, TVOC, temperature, humidity) from the detector, with text 'Link To Cloud To TrackAt Any Time'. — Figure 6: Mobile APP interface for online monitoring

5. Operating Instructions

5.1 Display Interface Switching

The device can switch between different display interfaces to show specific parameters:

Default Display: Shows CO2, PM2.5, HCHO, TVOC, Temperature, and Humidity.
Switching Display: Briefly press the multi-function button to toggle between the HCHO & TVOC display and the PM1.0 & PM10 display.

Diagram showing how to switch the display between HCHO & TVOC and PM1.0 & PM10 readings. — Figure 7: Switching between display interfaces

5.2 Automatic Brightness Control

The device features an automatic brightness control function. It will adjust the screen brightness based on the ambient light conditions to ensure readability without being overly harsh on the eyes.

Illustration demonstrating automatic brightness control, showing the device screen in bright and dim environments. — Figure 8: Automatic brightness control in action

5.3 Screen Sleep and Wake-up

To conserve energy, the screen can automatically enter sleep mode after a period of inactivity (default 30 seconds, customizable via APP). While the screen is off, the sensors continue to operate and transmit data to the cloud via WiFi.

Wake-up: Simply wave your hand in front of the device to activate the proximity sensor and wake up the screen.

Diagram illustrating the screen-off function for energy saving and the wave gesture to wake up the screen. — Figure 9: Screen sleep and wave-to-wake function

5.4 APP Usage and Settings

Through the Tuya APP, you can:

View real-time air quality values and historical data graphs.
Set alarm values for PM2.5 and CO2 concentrations.
Toggle the alarm sound on/off.
Switch temperature units between Celsius (℃) and Fahrenheit (℉).
Enable/disable the screen-off function and set the screen-off time.

Image showing the Air Quality Monitor on a desk next to a smartphone displaying the companion app, illustrating an 'Application Scenario'. — Figure 10: Application scenario with mobile app

6. Maintenance

Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
Ventilation: Ensure the ventilation holes on the device are not blocked to maintain accurate readings and proper heat dissipation.
Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
Battery Care: Recharge the device regularly to prolong battery life. Avoid fully discharging the battery frequently.

7. Troubleshooting

Device not turning on: Ensure the device is fully charged. If the battery is low, connect it to a power source using the Type-C cable.
Inaccurate readings: Perform a manual calibration as described in Section 4.3. Ensure the device is placed in a stable environment away from strong air currents or direct sources of pollution.
APP not connecting: Verify that the device's WiFi is enabled and your smartphone is connected to a 2.4GHz WiFi network. Restart both the device and the app, then attempt to re-pair.
Screen not waking up: Ensure the screen sleep function is enabled in the APP settings. Wave your hand closer to the device's front panel.

8. Specifications

Parameter	Value
Material	ABS
Color	White
Battery	1 * 350mAh lithium battery (included)
Display	LCD color display
Sensors	NDIR infrared CO2, Laser particle, Semiconductor, Optical, Distance
HCHO Measurement Ranges	0-1.999 mg/m³
TVOC Measurement Ranges	0-9.999 mg/m³
PM1.0/PM2.5/PM10 Ranges	0-1000 µg/m³; ±10 µg/m³ (0-100 µg/m³) or ±10% (100-500 µg/m³)
CO2 Measurement Ranges	400-5000 PPM; ±(50 + 5% reading) PPM
Temperature Measurement Ranges	0-50℃; ±1℃
Humidity Measurement Ranges	0-99%RH; ±5%RH
Recharging Method	USB Type-C interface, 5V 2A
Item Size	70 * 84 * 35 mm / 2.76 * 3.31 * 1.38 in
Package Size	90 * 80 * 40 mm / 3.54 * 3.15 * 1.57 in
Package Weight	209 g / 7.37 ounce

Diagram explaining the separate display of gas concentration levels (Good, Poor, Unhealthy) for CO2, TVOC, HCHO, PM2.5, PM1.0, and PM10 with their respective concentration ranges. — Figure 11: Gas concentration level indicators and ranges

Product introduction image with dimensions (70mm width, 84mm height, 35mm depth) and labels for CO2, PM2.5, HCHO, TVOC, TEMP, HUMI. — Figure 12: Product dimensions and display labels

9. User Tips

For consistent monitoring, consider keeping the device plugged in, especially if you rely on continuous data transmission to the app.
If you notice significant discrepancies between the device's readings and other known air quality sources, try performing a manual calibration in a fresh air environment.
Utilize the customizable alarm settings in the Tuya APP to receive timely notifications for specific pollutant levels, helping you maintain optimal air quality.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the contact details provided by your retailer or the manufacturer's official website. Keep your purchase receipt as proof of purchase.

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JUANJUAN PV28-CW