WINSEN AIR PURIFIER SENSING

Air Purifier Sensor Solutions for Smart Air Purification

Build smarter air purifiers with Winsen PM2.5, VOC, formaldehyde and integrated air quality sensor modules. Support real-time air quality monitoring, automatic fan control and flexible OEM integration.

PM1.0 / PM2.5 / PM10 VOC / Odor HCHO Multi-in-One IAQ Automatic Fan Control
Smart air purifier sensor solution for residential air purification
Real-Time Monitoring

Provide particle and gas sensing data for intelligent purifier control.

Automatic Operation

Enable OEM-defined fan speed adjustment using air quality signals.

Flexible Sensor Options

Select dedicated sensors or integrated multi-parameter modules.

OEM Integration

Support sensor selection, interface matching and system development.

AIR QUALITY PARAMETERS

What Should a Smart Air Purifier Detect?

Different pollutants require different sensing technologies. For air purifier manufacturers, the right sensor combination depends on the target pollutants, purification functions, control strategy and desired user experience.

PM

Particulate Matter

Laser particle sensors measure airborne particle concentration, including PM1.0, PM2.5 and PM10. These measurements can support automatic fan speed control and real-time air quality display.

Recommended: ZH10-F →
VOC

VOC & Odor-Related Gases

VOC sensing helps detect changes in gaseous organic pollutants associated with certain household products, paints, solvents and other indoor sources. It complements particle measurements.

Recommended: ZM106-VOC →
HCHO

Formaldehyde Detection

Dedicated electrochemical HCHO sensors provide formaldehyde concentration data for purification equipment that requires specific formaldehyde monitoring.

Recommended: ZE08K-CH2O →
Differences between PM2.5 VOC and formaldehyde sensing for air purifier applications
PM, VOC and HCHO represent different sensing targets. A broad-spectrum VOC response should not be treated as an equivalent replacement for dedicated formaldehyde measurement.
Optional IAQ parameters: Some advanced air purifiers also include CO₂, temperature and humidity monitoring. CO₂ data is useful for ventilation-related functions and environmental display, but conventional particulate filters do not directly remove CO₂ from indoor air.
SMART PURIFIER CONTROL

How Air Quality Sensors Enable Automatic Air Purifier Control

In a smart air purifier, sensors provide continuously updated environmental data. The purifier controller can use these signals to adjust fan operation, display air quality information or respond to changes in indoor pollution.

STEP 01

Pollutant Detection

PM, VOC or HCHO sensors detect selected indoor pollution parameters.

STEP 02

Signal Processing

Sensor outputs are processed and evaluated by the device controller.

STEP 03

Fan Speed Adjustment

The purifier adjusts its operating mode according to OEM-defined logic.

STEP 04

Continuous Feedback

New measurements provide ongoing input for operation and air quality display.

Smart air purifier sensor signal processing and automatic fan control workflow
Typical intelligent air purifier control concept. Actual fan speed thresholds, filtering algorithms and control logic are defined by the equipment manufacturer.
SENSOR ARCHITECTURE

Dedicated Sensors or Multi-in-One Air Quality Modules?

Air purifier OEMs can build a sensing architecture from individual modules or use an integrated multi-parameter platform. Both approaches are suitable for different product designs.

Dedicated Sensor Architecture

Combine separate PM, VOC and HCHO modules according to the required parameters and mechanical design.

  • Flexible parameter selection
  • Independent sensor positioning
  • Parameter-specific module choices
  • Flexible future upgrades
  • Suitable for customized purifier platforms

Typical combination:
ZH10-F + ZM106-VOC + ZE08K-CH2O

Multi-in-One Sensor Architecture

Integrate multiple environmental sensing functions within one module to simplify product-level integration.

  • Compact integrated design options
  • Reduced number of separate modules
  • Simpler mechanical planning
  • Fewer independent signal connections
  • Suitable for feature-rich smart purifiers

Typical options:
ZH10-VHT / ZPHS01C

Selection Factor Dedicated Sensors Multi-in-One Modules
Parameter Selection Choose each sensing function independently Use the parameters supported by the selected module
Mechanical Layout More freedom to position individual sensors Compact module-level arrangement
Wiring & Communication Multiple module interfaces may be required May simplify host-side communication
Future Changes Individual modules can be evaluated separately Depends on integrated product configuration
Project Cost Depends on sensor count and integration effort Depends on module price and required functions
For ZPHS01C, Winsen provides an HCHO version or a VOC version. HCHO and VOC sensing are not available simultaneously in the same standard configuration.
WINSEN SENSOR PORTFOLIO

Recommended Winsen Sensors for Air Purifiers

Explore dedicated particulate matter, VOC and formaldehyde sensors along with integrated air quality modules. Select products according to target pollutants, dimensions, interface and purifier control requirements.

PARTICLE SENSOR Winsen ZH10-F laser dust sensor module

ZH10-F Laser Dust Sensor

Compact laser particle sensor for PM monitoring and automatic air purifier fan control.

  • Target PM1.0, PM2.5, PM10
  • Range 0–1000 μg/m³
  • Output UART / PWM
  • Size 38 × 35 × 12 mm
4-IN-1 IAQ MODULE Winsen ZH10-VHT compact air quality sensor module

ZH10-VHT 4-in-1 Air Quality Module

Integrated PM2.5, VOC, temperature and humidity sensing for compact smart air purifier designs.

  • Target PM2.5, VOC, Temperature, Humidity
  • PM Range 0–1000 μg/m³
  • Output UART / PWM
  • Size 38 × 35 × 12 mm
VOC SENSOR Winsen ZM106-VOC digital VOC sensor module

ZM106-VOC Digital Sensor Module

Compact MEMS semiconductor VOC module for indoor gaseous pollution trends and smart purification control.

  • Target VOC and organic volatiles
  • Range 0–10 mg/m³
  • Output UART (3.3V TTL)
  • Principle MEMS semiconductor
FORMALDEHYDE SENSOR Winsen ZE08K-CH2O electrochemical formaldehyde sensor

ZE08K-CH2O Formaldehyde Sensor

Dedicated electrochemical HCHO detection module for air purifiers requiring formaldehyde concentration measurement.

  • Target Formaldehyde (HCHO)
  • Range 0–5 ppm
  • Output UART / Analog / PWM
  • Principle Electrochemical
AIR QUALITY LEVEL Winsen ZP07 air quality detection module

ZP07 Air Quality Detection Module

Semiconductor air quality module providing a graded pollution signal for basic automatic purification and ventilation functions.

  • Target Broad air quality gases
  • Output 0–3 grade pollution signal
  • Principle Semiconductor
  • Size 24 × 20 × 16 mm
MULTI-IN-ONE IAQ Winsen ZPHS01C multi-in-one air quality sensor module

ZPHS01C Multi-in-One IAQ Module

Integrated air quality sensing platform for feature-rich air purifiers and environmental monitoring equipment.

  • Target PM2.5, CO₂, T&H, HCHO or VOC version
  • CO₂ Range 400–5000 ppm
  • PM Range 0–1000 μg/m³
  • Output UART (TTL)
Additional options: Winsen also offers ZPH04 for particle sensing, ZPS20 for VOC and temperature/humidity monitoring, and ZP16-A for broader air quality response. Model selection and availability should be confirmed against the latest documentation.
OEM SELECTION GUIDE

How to Choose Sensors for Different Air Purifier Designs

There is no universal sensor combination for every air purifier. The most practical approach is to begin with the product's detection targets and control functions.

Purifier Design Main Requirement Suggested Winsen Sensors Selection Consideration
Basic Smart Air Purifier PM detection and automatic fan speed control ZH10-F Suitable when particle concentration is the primary control input.
PM + VOC Air Purifier Particle monitoring and gaseous pollution trends ZH10-VHT or ZH10-F + ZM106-VOC Choose an integrated or distributed architecture.
Formaldehyde Monitoring Purifier Dedicated HCHO concentration measurement ZE08K-CH2O plus PM sensing if required Use a dedicated HCHO module rather than relying only on broad VOC response.
Air Quality Level Control Simplified gas-related pollution indication ZP07 Suitable when a graded pollution signal meets the control requirements.
Advanced Multi-Parameter Purifier PM, CO₂, T&H and either VOC or HCHO monitoring ZPHS01C Confirm the HCHO or VOC configuration before selection.
Compact Smart Purifier Several air quality parameters in limited equipment space ZH10-VHT Confirm module dimensions, airflow and host interface.
The above combinations are starting recommendations for OEM development, not fixed product bundles. Final selection depends on the air purifier enclosure, electrical design, sensing requirements and validation results.
OEM ENGINEERING SUPPORT

From Air Quality Sensor to Smart Air Purifier

Designing a smart air purifier requires more than choosing a sensor module. The sensing system should work reliably with the purifier's airflow, controller, power supply and user interface.

  • Sensor selection according to PM, VOC and HCHO requirements
  • UART, PWM, analog and model-specific interface matching
  • Mechanical size and airflow evaluation
  • Sensor warm-up and data processing
  • Automatic fan control logic discussion
  • Engineering samples and mass-production coordination
Winsen multi-in-one air quality modules for smart air purifier OEM integration
Air purifier OEM integration concept featuring air quality sensing, controller communication and automatic purification control.

Airflow & Sensor Placement

Sensor position should be selected according to representative sampling, fan airflow, enclosure geometry and possible contamination. Final placement requires equipment testing.

Temperature & Humidity

Environmental conditions can affect measurement response. Avoid condensation and verify module performance across the intended operating environment.

Signal & Control Strategy

Allow for sensor warm-up, measurement stabilization and suitable filtering or decision logic when designing automatic control.

Electrical Integration

Confirm module voltage, current consumption, communication level and connector requirements before PCB integration.

Sensor Maintenance

Consider airborne dust accumulation, cleaning procedures, sensor lifespan and long-term operating conditions in the finished product.

Finished-Device Testing

Validate sensor response and purifier control across different fan speeds, operating modes and representative indoor pollutants.

AIR PURIFIER APPLICATIONS

Air Quality Sensing for Different Purifier Products

Winsen sensor modules can support different air purifier product designs, from simple PM monitoring to integrated multi-parameter environmental sensing.

Residential Air Purifiers

Particle sensing for household air quality display and automatic fan operation.

Smart Connected Purifiers

Sensor data can be used by connected devices for monitoring, display and automated operation.

Multi-Function Air Purifiers

Combine particulate matter, VOC, temperature and humidity monitoring within one product.

Formaldehyde Monitoring Purifiers

Dedicated HCHO sensing for products designed to display or respond to formaldehyde concentration.

Desktop & Compact Purifiers

Evaluate compact sensing options for small enclosures and limited installation space.

Commercial Purification Equipment

Integrate air quality monitoring into purification equipment for offices and other indoor environments.

Sensor readings alone do not establish purifier CADR, filter efficiency, pollutant removal performance or filter replacement intervals. These functions require separate finished-device evaluation.
FREQUENTLY ASKED QUESTIONS

Air Purifier Sensor FAQs

Practical questions about air purifier sensor selection, PM2.5 monitoring, VOC detection, formaldehyde measurement and OEM integration.

Which sensor is best for an air purifier?

The best sensor depends on the pollutants the purifier needs to monitor. PM2.5 sensors are commonly selected for particle-based automatic fan control. VOC and HCHO sensors can be added when gaseous pollution or formaldehyde monitoring is required.

What is the difference between a PM2.5 sensor and a VOC sensor?

A PM2.5 sensor measures fine airborne particles, while a VOC sensor responds to selected volatile organic compounds or changes in gaseous air quality. They measure different aspects of indoor pollution.

Can an air purifier sensor automatically control fan speed?

Yes. Air quality sensor signals can be processed by the purifier controller to support automatic fan speed changes. The thresholds, algorithms and operating modes are defined by the OEM.

Can VOC sensors replace dedicated formaldehyde sensors?

Not when specific HCHO concentration measurement is required. Broad VOC sensors may respond to different organic compounds, while dedicated formaldehyde modules are intended for HCHO measurement.

What are the benefits of multi-in-one air quality sensor modules?

Integrated modules can reduce the number of individual sensing components, simplify mechanical planning and reduce integration complexity. The best choice depends on the module's supported parameters, electrical requirements and application.

Where should an air purifier sensor be installed?

Sensor position should consider representative air sampling, airflow paths, dust accumulation, temperature and humidity. The final position should be determined through testing of the actual purifier enclosure and operating modes.

Does an air purifier CO₂ sensor help remove carbon dioxide?

CO₂ measurement can support ventilation-related functions and indoor environmental monitoring. Conventional particulate filtration does not directly remove CO₂. CO₂ management generally requires suitable ventilation or other dedicated removal technology.

Does Winsen support customized air purifier sensor projects?

Winsen can support sensor selection, model-specific interface discussions, module integration and technical communication for OEM air purifier projects. Contact our team with your required parameters and system specifications.

INDOOR AIR QUALITY SENSING

More Indoor Air Quality Sensor Solutions

Beyond air purification, Winsen provides sensors for indoor air quality monitors, fresh-air ventilation, HVAC systems and smart appliances. Explore our complete indoor air quality portfolio for additional sensing options.

Explore Indoor Air Quality Sensor Solutions →

Looking for Other IAQ Sensors?

Explore CO₂, PM, VOC, formaldehyde, temperature and humidity sensors for different indoor applications.

  • Indoor Air Quality Monitoring
  • HVAC & Ventilation
  • Smart Air Conditioning
  • Integrated IAQ Modules

Find the Right Air Purifier Sensor for Your OEM Project

Tell us which pollutants you need to monitor, your required dimensions, communication interface and target application. Winsen can help you evaluate suitable sensor options for your next air purifier design.

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Professional manufacturer of gas sensors, global sensing solutions provider with over 30 years of experience. Top quality guarantee, Excellent service, Customized products, Fast delivery!

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ppm: parts per million
ppb: parts per billion
VOL: volume ratio
LEL: lower explosive limit
NDIR: Non-Dispersive Infra-Red

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