Air Quality Sensor

ATO Air Quality Sensor Selection Guide

Choosing the right air quality sensor depends on the pollutants you need to monitor, the installation environment, the required output signal, and whether the sensor will be used for indoor monitoring, HVAC control, outdoor air monitoring, industrial dust detection, or IoT environmental systems.
ATO offers different types of air quality sensors, including multi-parameter indoor sensors, industrial particle sensors, outdoor particulate matter sensors, IoT air quality sensors, pipe-type sensors, and compact sensor modules. The table below can help buyers quickly choose the right ATO air quality sensor for their application.

ATO Air Quality Sensor Selection Table

This table helps users compare ATO air quality sensors by model, detection parameters, output signal, and recommended application. Buyers can quickly identify whether they need a multi-parameter indoor sensor, an outdoor PM sensor, an industrial dust sensor, an IoT wireless sensor, or an embedded PM2.5 module.

How to Choose the Right ATO Air Quality Sensor

1. For Indoor Air Quality Monitoring
For homes, offices, schools, hospitals, and public indoor spaces, choose a sensor that can measure multiple comfort and air pollution indicators. Recommended models include ATO-AQS-HAQS, ATO-AQS-802F, and ATO-AQS-M701485.
These models are suitable when users need to monitor parameters such as CO2, PM2.5, PM10, TVOC, HCHO, temperature, and humidity. They are practical for indoor air quality control, ventilation management, and environmental data collection.

2. For HVAC and Building Automation
For HVAC systems, ventilation ducts, building management systems, and long-term indoor monitoring, output signal and installation style are very important. Recommended models include ATO-AQS-820B, ATO-AQS-802F, ATO-AQS-FST100, and ATO-AQS-IAQS.
If the sensor needs to connect with a controller, PLC, or building management system, choose models with RS485 / Modbus-RTU, 4-20mA, 0-10V, or 0-20mA output.

3. For Outdoor Particulate Matter Monitoring
For outdoor air quality projects, construction site dust monitoring, environmental stations, and weather-related air monitoring, choose a sensor designed for particulate matter detection and outdoor installation. Recommended models include ATO-AQS-QPM and ATO-AQS-IAQS.
The ATO-AQS-QPM is suitable for outdoor PM1.0, PM2.5, and PM10 monitoring with 4-20mA, 0-10V, or RS485 output. The ATO-AQS-IAQS is also suitable for outdoor weather stations, dust monitoring, libraries, archives, and plants.

4. For Industrial Dust and Particle Monitoring
For factories, workshops, production areas, dust monitoring systems, and industrial environmental control, choose industrial-grade particulate matter sensors. Recommended models include ATO-AQS-FST100, ATO-AQS-IAQS, and ATO-AQS-QPM.
The ATO-AQS-FST100 uses the laser scattering measurement principle and supports RS485 output via Modbus-RTU, making it suitable for PM2.5 and PM10 monitoring in industrial applications.

5. For IoT and Wireless Air Quality Monitoring
For IoT projects, smart air monitoring systems, wireless data transmission, and 24-hour online monitoring, choose models with WiFi, Bluetooth, or flexible output options. Recommended models include ATO-AQS-802A and ATO-AQS-SMG111.
The ATO-AQS-802A supports multiple output methods, including WiFi, Bluetooth, RS485, and 4-20mA, making it suitable for IoT air quality systems and continuous online monitoring.

6. For Embedded Devices and Product Development
For air purifiers, smart home devices, compact monitoring equipment, or embedded product development, choose a compact PM sensor module. Recommended model: ATO-AQS-D7.
The ATO-AQS-D7 measures particulate matter from 0.3–10 μm and provides PWM and UART outputs, making it suitable for low-power air quality monitoring applications.

Quick Recommendation by Application

This table is useful for buyers who already know their application but are not sure which ATO model to choose. By matching the use case with the recommended model, users can narrow down their selection more efficiently and avoid choosing a sensor that does not fit the installation environment or monitoring purpose.

Conclusion

ATO air quality sensors cover a wide range of air monitoring needs, from indoor multi-parameter monitoring to outdoor particulate matter detection, industrial dust monitoring, HVAC integration, IoT air quality systems, and embedded PM2.5 applications.