Monitor Cabin Air Quality
Track PM and CO₂ trends inside the vehicle cabin.
Automotive Cabin Air Quality Solutions
Automotive Multi-In-One Air Quality Sensors
Integrated PM, CO₂, AQS and temperature sensing for intelligent cabin air quality management. Monitor in-cabin air quality, evaluate outside pollution conditions and support smarter vehicle HVAC control with compact multi-in-one automotive sensor modules.
Multi-Parameter Sensing
Designed for Vehicle HVAC Systems
Multiple Configurations
Overview
One Sensor Module. A More Complete View of Cabin Air Quality.
Vehicle cabin air quality cannot be evaluated by a single parameter alone. Fine particles, rising CO₂ levels, outside pollution events and cabin temperature all influence HVAC control decisions.
MAXMAC automotive multi-in-one air quality sensors combine multiple sensing functions in a compact module, helping vehicle systems monitor cabin conditions, evaluate outside air quality and optimize fresh-air or recirculation strategies.
Detect Outside Pollution
Use AQS-related data to evaluate external pollution events.
Support HVAC Decisions
Provide real-time data for fresh-air and recirculation strategies.
Reduce System Complexity
Integrate multiple sensing functions into a compact module.
Integrated Sensing for Smarter Vehicle Air Quality Management
Combine the parameters required by your HVAC control strategy in one compact automotive sensor solution.
PM1.0 / PM2.5 / PM10
Particulate matter monitoring for cabin air quality assessment.
CO₂
Cabin ventilation demand monitoring.
AQS
Outside pollution level evaluation.
NTC Temperature
Temperature-linked HVAC control.
Dual PM Channels
Cabin and outside air comparison.
Different vehicle platforms require different sensing strategies. MAXMAC provides multiple integrated sensor configurations for cabin monitoring, outside air evaluation and intelligent HVAC system design.
Choose the Right Automotive Air Quality Sensor for Your HVAC Strategy
Three integrated configurations for different vehicle air quality monitoring and control requirements.
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Advanced Dual-Channel Solution
Dual PM + CO₂ + AQS Automotive Air Quality Sensor - P09
Designed for vehicle systems that require a more complete cabin air quality strategy. Dual PM sensing supports cabin and outside air comparison, while CO₂ and AQS data provide additional inputs for ventilation and recirculation control.
- Cabin and outside air comparison
- Intelligent fresh-air and recirculation strategies
- Advanced cabin air quality management systems
Integrated Standard Solution
PM + CO₂ + AQS Automotive Air Quality Sensor - P15
A compact multi-in-one sensor that combines PM, CO₂ and AQS monitoring for automotive HVAC systems. Suitable for projects requiring comprehensive air quality data in a simplified sensor architecture.
- In-cabin air quality monitoring
- Outside pollution evaluation
- Compact vehicle HVAC integration
Temperature-Linked HVAC Solution
PM + CO₂ + NTC Automotive Air Quality Sensor - S21
Integrates PM and CO₂ monitoring with NTC temperature sensing to support cabin air quality assessment and temperature-linked HVAC control strategies.
- Cabin PM and CO₂ monitoring
- Temperature-linked HVAC control
- Cost-effective integrated sensing
Compare Automotive Multi-In-One Sensor Configurations
Review the sensing combinations and find the right module for your vehicle HVAC architecture.
| Feature | P09 | P15 | S21 |
|---|---|---|---|
| Product Positioning | Advanced dual-channel solution | Standard integrated solution | Temperature-linked solution |
| PM Detection | Dual PM | PM | PM |
| CO₂ Detection | Yes | Yes | Yes |
| AQS | Yes | Yes | - |
| NTC Temperature | - | - | Yes |
| Cabin Monitoring | Yes | Yes | Yes |
| Outside Air Evaluation | Yes | Yes | Available based on project requirements |
| Cabin / Outside PM Comparison | Yes | - | - |
| HVAC Integration | Yes | Yes | Yes |
| Communication Interface | LIN | LIN | LIN |
| Customization | Available based on project requirements | Available based on project requirements | Available based on project requirements |
Need help selecting a sensor configuration? Share your HVAC control logic, installation position and communication requirements with our engineering team.
Get Product Selection SupportHow Multi-In-One Air Quality Sensing Supports Vehicle HVAC Control
From real-time sensing to smarter cabin air quality strategies.
01
Sense
Monitor PM, CO₂, AQS and temperature-related data based on the selected module configuration.
02
Evaluate
Provide multi-parameter data for cabin condition assessment and outside pollution evaluation.
03
Communicate
Transmit real-time sensor data to the vehicle HVAC controller through the selected interface.
04
Control
Support fresh-air intake, recirculation, air purification and cabin comfort strategies.
Built for Intelligent Cabin Air Quality Management
Support different monitoring and HVAC control strategies across vehicle platforms.
In-Cabin Air Quality Monitoring
Monitor PM and CO₂ concentration trends inside the vehicle cabin to support real-time air quality assessment and passenger comfort.
Recommended models: P09 / P15 / S21
Automatic Fresh-Air and Recirculation Control
Use cabin CO₂ data and outside pollution-related inputs to support smarter ventilation decisions and reduce unnecessary exposure to polluted outside air.
Recommended models: P09 / P15
Cabin and Outside PM Comparison
Dual PM sensing helps the vehicle system compare cabin and outside particulate matter conditions for more refined air intake strategies.
Recommended model: P09
Temperature-Linked HVAC Control
Combine PM and CO₂ monitoring with NTC temperature sensing to support cabin climate control and HVAC system integration.
Recommended model: S21
Vehicle Air Purification Systems
Provide sensor data for air purification systems, cabin air quality displays and intelligent cockpit interfaces.
Recommended models: P09 / P15 / S21
Designed for Automotive HVAC Integration
Compact multi-parameter sensing solutions for vehicle platform development.
01
Flexible Multi-Sensor Configurations
Choose from PM2.5 + CO₂ + AQS or PM2.5 + CO₂ + temperature and humidity sensing configurations to match different automotive HVAC control requirements.
02
Self-Developed Factory Calibration System
Each multi-in-one sensor is calibrated using MAXMAC's self-developed calibration system before delivery. Integrated sensing parameters are verified and optimized to improve measurement consistency, reduce additional calibration work and simplify vehicle platform integration.
03
Up to 15-Year Automotive Sensor Lifetime
Engineered for long-term vehicle operation, the multi-in-one sensor provides a service life of up to 15 years, supporting reliable air quality monitoring with reduced maintenance requirements.
04
High-Temperature and High-Humidity Resistance
Designed for demanding automotive environments, with reliable operation from -40°C to 85°C and 5%-95% RH under non-condensing conditions.
05
Unified LIN Data Output
Transmit multiple air quality parameters through a single LIN communication interface to simplify wiring, system integration and HVAC control logic.
06
Compact Design for HVAC Integration
Compact sensor housings help reduce installation space and support flexible integration into HVAC ducts, cabin air quality systems and vehicle platforms.
System Architecture
Flexible Integration Across Vehicle Air Quality Systems
Cabin Monitoring Unit
Monitor in-cabin PM and CO₂ conditions.
HVAC Air Intake
Evaluate outside air pollution before fresh air enters the cabin.
HVAC Duct
Provide real-time data for climate control and air purification systems.
Smart Cockpit Display
Support cabin air quality visualization and passenger-facing interfaces.
Recommended installation positions depend on the selected sensor configuration and vehicle HVAC architecture.
Related Articles on Automotive Air Quality Sensing
Explore technical and industry perspectives on multi-in-one air quality modules, HVAC control and intelligent cabin air management.
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Read ArticleFrequently Asked Questions About Automotive Multi-In-One Air Quality Sensors
An automotive multi-in-one air quality sensor integrates multiple sensing functions into a compact module for vehicle HVAC systems. Depending on the selected configuration, the module can monitor PM2.5, CO₂, AQS-related pollution levels, temperature or humidity data.
Compared with installing separate sensor modules, an integrated solution can help reduce wiring complexity, installation space and system integration work while providing unified data output for cabin air quality monitoring and HVAC control.
The appropriate configuration depends on your vehicle HVAC strategy and required sensing parameters.
P09 combines dual PM, CO₂ and AQS sensing. It is suitable for projects that require cabin and outside particulate matter comparison together with pollution-related air quality evaluation.
P15 combines PM2.5, CO₂ and AQS sensing in a compact integrated module. It is suitable for comprehensive cabin air quality monitoring and fresh-air or recirculation strategies.
S21 combines PM2.5, CO₂, temperature and humidity-related sensing. It is suitable for projects that require cabin air quality monitoring together with climate-control data.
Share your installation position, required parameters and HVAC control logic with our engineering team for model selection support.
The sensor module continuously monitors selected air quality parameters and transmits real-time data to the vehicle HVAC controller through the communication interface.
PM2.5 data can help evaluate particulate matter conditions. CO₂ data can support ventilation-demand assessment inside the cabin. AQS-related data can help evaluate outside pollution events.
Based on the vehicle platform and HVAC control logic, the controller can use this information to support fresh-air intake, recirculation and air purification strategies.
The available parameters depend on the selected model.
P09 and P15 combine laser-scattering PM2.5 sensing, NDIR CO₂ measurement and AQS-related air quality level output.
S21 combines laser-scattering PM2.5 sensing, NDIR CO₂ measurement and temperature-humidity sensing.
Based on the current product specifications, PM2.5 measurement covers 0-999 µg/m³. CO₂ measurement covers approximately 400-10,000 ppm depending on the selected model. Contact us for the latest model-specific specification sheet.
Yes. Each multi-in-one sensor module is calibrated and verified before delivery using MAXMAC's self-developed factory calibration system.
Factory calibration helps improve measurement consistency across production batches and reduces additional integration work during vehicle platform development.
Calibration requirements after storage, transportation or long-term operation should be confirmed according to the selected model, application environment and vehicle validation plan.
The multi-in-one sensors are designed for automotive HVAC environments with changing temperature and humidity conditions.
Based on the current product specifications, P09, P15 and S21 support an operating environment of -40°C to 85°C and 5% to 95% RH under non-condensing conditions. The specified service life is up to 30,000 operating hours.
The final sensor selection should also consider installation position, airflow, condensation risk, vehicle duty cycle and platform-level validation requirements.
Based on the current product specifications, P09, P15 and S21 support LIN communication for vehicle HVAC integration.
The modules operate from 9-16 VDC. Current consumption, wiring harness, connector design, installation space and data-output requirements should be confirmed during project evaluation.
Please share your vehicle platform, controller requirements and installation architecture so that our engineering team can recommend the appropriate integration approach.
Project-level customization can be evaluated according to the selected sensor configuration and vehicle platform requirements.
Available discussion items may include sensing parameters, installation position, wiring harness length, connector design, housing structure, communication requirements and validation targets.
To support product selection, quotation and sample evaluation, please share your application, required sensing parameters, installation space, interface requirements, project stage and estimated annual volume.
Find the Right Automotive Air Quality Sensor for Your Project
Share your sensing parameters, HVAC control strategy, installation position and communication requirements. Our engineering team will recommend a suitable sensor configuration for your vehicle platform.