Air Quality Sensor

Air quality sensor is a device used to monitor indoor and outdoor air conditions, detecting pollutants, particulate matter, carbon dioxide, temperature, humidity, and other environmental factors. They are suitable for use in homes, offices, schools, warehouses, factories, laboratories, HVAC systems, smart buildings, and environmental monitoring projects. By providing real-time air quality data, these sensors help users identify poor ventilation, pollution risks, dust accumulation, and unhealthy air conditions, thereby creating cleaner, safer, and more comfortable spaces.

Choose by Application

• Ventilation systems, HVAC control, and smart building management.
• Recommended:
• Indoor Air Quality Sensor

• Factories, warehouses, workshops, and industrial environments.
• Recommended:
• Outdoor Air Quality Sensor

• Outdoor air quality, weather stations, and environmental monitoring projects.
• Recommended:
• Air Pollution Sensor

• Homes, offices, schools, hospitals, and indoor public spaces.
• Recommended:
• Air Quality Sensor for Home

Air Quality Sensor FAQ

Q1: What is the best air quality sensor for indoor air monitoring?

Indoor air monitoring usually requires detection of CO₂, PM2.5, PM10, TVOC, formaldehyde, temperature, and humidity. In offices, schools, homes, and commercial buildings, air quality sensors with RS485, 4-20mA, WiFi, or relay output are easier to connect with HVAC systems and monitoring platforms.

Q2: Which air quality sensor is suitable for HVAC or smart buildings?

A wall-mounted multi-parameter air quality sensor is commonly used in HVAC, BMS, and fresh air systems. Key detection items include CO₂, PM2.5, TVOC, temperature, and humidity, while RS485, Modbus, 4-20mA, or relay output helps support ventilation control and system integration.

Q3: How do I choose an air quality sensor for factories or warehouses?

Factories, warehouses, and workshops should choose sensors based on target pollutants such as PM2.5, PM10, VOCs, CO₂, formaldehyde, CO, O₃, temperature, and humidity. Industrial air quality sensors with RS485, 4-20mA, relay, or wireless output are better for connecting to control or monitoring systems.

Q4: What air quality sensor is suitable for outdoor monitoring?

Outdoor air monitoring requires a weatherproof sensor with stable communication and anti-interference design. Common detection options include PM2.5, PM10, CO₂, TVOC, CO, O₃, NO₂, SO₂, temperature, humidity, wind speed, and wind direction, with outputs such as RS485, 4-20mA, LoRa, WiFi, or 4G.

Products Recommended by Scenario

Air Quality Sensor for Home	Indoor Air Quality Sensor	Outdoor Air Quality Sensor	Outdoor Air Pollution Sensor
Suitable for: Indoor Air Quality Monitoring	Suitable for: HVAC & Smart Building Control	Suitable for: Industrial Air Pollution Monitoring	Suitable for: Outdoor Environmental Monitoring
Modbus-RS485 Test TVOC/CO2/CH2O ABS shell, flexible configuration	4-20mA Temp & Hum/O2/TVOC/CO2/CH2O ABS shell & 24-hour online	RS485/4-20mA/0-5V/0-10V/WiFi PM2.5/PM10/PM1.0 ABS material, automatic calibration	RS485/4-20mA/0-5V/0-10V/WiFi PM2.5/PM10/PM1.0 ABS material, anti-interference
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Air Quality Sensor Comparison Table