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All-in-One Sensor Module (PM+CO?+NTC) - S21

This MAXMAC automotive-grade all-in-one sensor module integrates PM particulate detection, CO? monitoring, and NTC temperature sensing, and is designed for intelligent in-vehicle cabin air quality management systems. The module uses high-precision sensing units and a stable signal processing architecture to enable synchronized multi-parameter acquisition and real-time output, providing reliable data support for intelligent cockpits and air purification systems.

  • Highly integrated 3-in-1 design reduces system complexity and vehicle cost
  • Supports intelligent linkage with HVAC and fresh-air circulation systems
  • Automotive-grade reliability for complex in-vehicle environments
All-in-One Sensor Module (PM+CO2+NTC)
Sensor Technology Principle
All-in-One Sensor Principle Diagram
All-in-One Sensor Principle Diagram
Technical Specifications
S21 3-in-1 Automotive Sensor
Product Name
S21 3-in-1 Automotive Sensor
Integrated Parameters
PM2.5 + CO2 + NTC / temperature-humidity
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
Communication
LIN
Overall Dimensions
88.8 mm × 65 mm × 16 mm
Main Body Dimensions
65 mm × 54 mm × 28 mm
PM2.5 Principle
Laser scattering technology
PM2.5 Range
0-999 µg/m³
PM2.5 Resolution
1 µg/m³
PM2.5 Accuracy
≤100 µg/m³: ±15 µg/m³; >100 µg/m³: ±15%
CO2 Principle
NDIR infrared technology
CO2 Range
400-9999 ppm
CO2 Resolution
1 ppm
CO2 Accuracy
±(50 ppm + 5% of reading)
Temperature Principle
CMOSens principle
Temperature Range
-20°C to 85°C
Temperature Resolution / Accuracy
0.1°C; ±2°C
Humidity Principle
CMOSens principle
Humidity Range
1-99%RH
Humidity Resolution / Accuracy
0.1%RH; ±5%RH
Applications
In-Vehicle Air Purification / Intelligent Cockpit

In-Vehicle Air Purification / Intelligent Cockpit

This MAXMAC automotive-grade all-in-one sensor module integrates PM particulate detection, CO? monitoring, and NTC temperature sensing, and is designed for intelligent in-vehicle cabin air quality management systems. The module uses high-precision sensing units and a stable signal processing architecture to enable synchronized multi-parameter acquisition and real-time output, providing reliable data support for intelligent cockpits and air purification systems.

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