1. Product Overview
The AQItech Professional Indoor Air Quality Monitor is a portable, real-time detection device designed to measure various air quality parameters. It provides continuous monitoring of Carbon Dioxide (CO2), Total Volatile Organic Compounds (TVOC), Formaldehyde (HCHO), Temperature, and Humidity. Equipped with AQI (Air Quality Index) beep alarms, this monitor helps you stay informed about the air quality in your environment.
2. Key Features
- 8-in-1 Real-time Detection: Monitors CO2, Formaldehyde (HCHO), TVOC, Temperature, Humidity, and provides 3 types of AQI alert buzzers.
- Simple Operation: One-button control for power on/off and unit switching (°C/°F). Double-tap to silence alarms.
- High-Precision Sensor System: Continuously collects and analyzes air data every 3 seconds for accurate updates.
- HD Large Display: Clear and advanced color display for enhanced readability.
- Long Battery Life & Fast Charging: Up to 8-10 hours of wireless operation on a single charge, with a 3-hour fast charge time via Type-C.
- Portable and Versatile: Compact design suitable for various settings including homes, offices, cars, nurseries, and campsites.
3. Package Contents
- AQItech Indoor Air Quality Monitor
- Type-C Charging Cable
- Power Adapter
- User Manual (this document)
4. Device Layout

Image 1: Front view of the AQItech Professional Indoor Air Quality Monitor. The green device features a black digital display showing real-time readings. From top to bottom, the screen indicates: CO2 at 515 PPM (labeled 'GOOD'), TVOC at 0.093 mg/m³ (labeled 'OK'), HCHO at 0.195 mg/m³ (labeled 'POOR'), temperature at 78°F, and humidity at 49%. A battery level indicator is visible in the top right corner of the display.
4.1 Display Indicators
- CO2 (Carbon Dioxide): Measured in Parts Per Million (PPM). Indicates indoor air quality related to ventilation.
- TVOC (Total Volatile Organic Compounds): Measured in milligrams per cubic meter (mg/m³). Represents a broad range of organic chemicals.
- HCHO (Formaldehyde): Measured in milligrams per cubic meter (mg/m³). A common indoor air pollutant.
- Temperature: Displays ambient temperature in Celsius (°C) or Fahrenheit (°F).
- Humidity: Displays relative humidity as a percentage (%).
- AQI (Air Quality Index): Visual and audible alerts based on detected pollutant levels (e.g., GOOD, OK, POOR).
- Battery Indicator: Shows the current battery charge level.
4.2 Buttons and Ports
- Power Button: Located on the top of the device. Used for power on/off and switching temperature units.
- Type-C Charging Port: Located on the side or bottom for connecting the charging cable.
5. Setup
5.1 Initial Charging
- Before first use, fully charge the device.
- Connect the provided Type-C charging cable to the monitor's charging port and the other end to the power adapter.
- Plug the adapter into a standard wall outlet.
- A full charge typically takes approximately 3 hours. The battery indicator on the display will show charging status.
5.2 Powering On/Off
- To Power On: Press and hold the power button for a few seconds until the display illuminates. The device will undergo a brief startup calibration.
- To Power Off: Press and hold the power button for a few seconds until the display turns off.
6. Operating Instructions
6.1 Understanding the Display
Once powered on, the monitor will begin displaying real-time readings for CO2, TVOC, HCHO, Temperature, and Humidity. The AQI status (GOOD, OK, POOR) will be indicated next to the respective pollutant levels, often with color coding for quick assessment.
6.2 Switching Temperature Units (°C/°F)
- With the device powered on, a short press of the power button will toggle the temperature display between Celsius (°C) and Fahrenheit (°F).
6.3 Alarm Management
- The monitor features 3 types of AQI alert buzzers that activate when pollutant levels exceed predefined thresholds.
- To silence an active alarm, double-tap the power button. The alarm will be temporarily muted.
6.4 Continuous Monitoring
The high-precision sensor system updates air data every 3 seconds, providing continuous and current information about your environment. For optimal accuracy, allow the device to stabilize for a few minutes after powering on, especially when moving it to a new location.
7. Maintenance
7.1 Cleaning the Device
- Wipe the exterior of the monitor with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the device.
- Avoid spraying liquids directly onto the device.
7.2 Sensor Care
- Keep the sensor vents clear of dust and debris. Do not insert any objects into the vents.
- Avoid exposing the device to extreme temperatures, high humidity, or direct sunlight for prolonged periods, as this can affect sensor accuracy and device lifespan.
7.3 Battery Care
- Charge the device regularly to maintain battery health.
- If storing the device for an extended period, charge it to approximately 50% and recharge every few months to prevent deep discharge.
8. Troubleshooting
- Device not turning on: Ensure the device is fully charged. Connect it to the charger and attempt to power on again.
- Display is blank or unresponsive: The device may have entered sleep mode or the battery might be depleted. Charge the device and press the power button.
- Readings appear unusually high or unstable upon startup: This is normal. The sensors require a brief warm-up and calibration period after being powered on or moved to a new environment. Allow a few minutes for readings to stabilize.
- Alarms sounding frequently: Check the displayed pollutant levels. If they are consistently high, consider improving ventilation in the area. To silence the alarm, double-tap the power button.
- Inaccurate readings: Ensure the sensor vents are not obstructed. Avoid placing the monitor near strong air currents, direct heat sources, or areas with high concentrations of dust or chemicals, which can interfere with sensor accuracy.
- Short battery life: Ensure the device is fully charged before use. Battery performance can vary based on usage patterns and environmental conditions.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | AQItech |
| Model Number | 5AQI+3 AQI Alert Buzzers |
| Power Source | Battery Powered (Lithium Ion) |
| Color | Green |
| Product Dimensions | 5.5"D x 2.4"W x 3.9"H |
| Alarm Type | 3 Kinds of AQI Alert Buzzers |
| Sensor Type | TVOC, CO2, HCHO, Temperature, Humidity |
| Item Weight | 6.4 ounces |
| Battery Life | 8-10 hours (wireless operation) |
| Charging Time | Approx. 3 hours |
| Included Components | Indoor Air Quality Monitor |
| UPC | 717019333752 |
10. Warranty and Support
10.1 Warranty Information
The AQItech Professional Indoor Air Quality Monitor comes with a 12-month warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
10.2 Customer Support
For any questions, technical assistance, or warranty inquiries, please contact AQItech customer support. Refer to the product packaging or the official AQItech website for the most current contact information.