Dual PM + CO₂ + AQS Automotive Air Quality Sensor - P09

MAXMAC P09 is an automotive multi-in-one air quality sensor designed for intelligent cabin air quality management. It integrates dual PM, CO₂ and AQS detection to monitor in-cabin and outside particulate matter, carbon dioxide concentration and air pollution levels. The sensor supports reliable data output for cabin air quality monitoring, automatic air recirculation control, fresh air ventilation and automotive air purification systems.

Featuring laser scattering PM detection and NDIR CO₂ sensing technology, P09 supports LIN communication for easy integration with automotive HVAC control systems. With an automotive-grade design and a wide operating temperature range of -40°C to 85°C, it delivers stable performance in complex vehicle environments.

  • Integrated dual PM + CO₂ + AQS detection reduces vehicle wiring and system cost
  • CO₂ measuring range: 400–10,000 ppm, resolution 1 ppm
  • PM2.5 measuring range: 0–999 μg/m³, response time ≤6s
  • LIN communication interface for automotive HVAC system integration
  • Automotive-grade design with stable operation from -40°C to 85°C
Dual PM + CO₂ + AQS Automotive Air Quality Sensor - P09
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Sensor Technology Principle
All-in-One Sensor Principle Diagram
All-in-One Sensor Principle Diagram
Technical Specifications
P09 3-in-1 Automotive Sensor
Product Name
P09 3-in-1 Automotive Sensor
Integrated Parameters
PM2.5 + CO2 + AQS
Operating Voltage
9-16 VDC
Operating Current
Average 80 mA @ 13.5VDC; peak 350 mA @ 13.5VDC
Operating Environment
-40°C to 85°C, 5%-95%RH, non-condensing
Storage Environment
-40°C to 85°C, 5%-95%RH, non-condensing
Service Life
30000 h
Noise
≤25 dB(A) @ 50 cm
Dimensions
Main body 126 mm × 73.8 mm × 34 mm; with AQS harness approx. 126 mm × 418 mm × 34 mm
Communication
LIN
PM2.5 Measurement Principle
Laser scattering analysis
PM2.5 Range
0-999 µg/m³
PM2.5 Performance
Resolution 1 µg/m³; accuracy ±15 µg/m³ or ±15%; response ≤6 s
CO2 Measurement Principle
NDIR non-dispersive infrared
CO2 Range
400-10000 ppm, resolution 1 ppm
CO2 Accuracy
±(50 ppm + 5% of reading)
CO2 Timing
Warm-up ≤10 s; response ≤20 s (t63%)
AQS Output
Air quality level output
AQS Performance
Warm-up 30 s; response ≤3 s; output levels 0-6

Note: AQS harness length can be customized according to vehicle installation requirements. Specification parameters can be confirmed according to project requirements. Document: MAXMAC-P09-CN Rev:1

Applicable Equipment
  • Intelligent Cabin Air Quality Management System
  • Automotive HVAC Air Recirculation Control System
  • EV Thermal Management System
  • In-Cabin CO₂ Monitoring System
  • In-Cabin and Ambient PM2.5 Monitoring System
  • Automotive Air Purification System
  • Passenger Car HVAC Control System
  • Commercial Vehicle Cabin Environment Monitoring System
Applications
In-Vehicle Air Purification / Intelligent Cockpit

In-Vehicle Air Purification / Intelligent Cockpit

Designed for in-vehicle air purification and intelligent cockpit applications, this module integrates dual PM, AQS, and CO₂ monitoring to detect particulate matter, odor pollution, and CO₂ concentration changes in real time. It supports intelligent linkage of HVAC recirculation/fresh-air switching and purification strategies to improve cabin comfort and safety.

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