Indoor Air Quality Sensor Solutions
Winsen provides CO2, particulate matter, VOC, formaldehyde, temperature and humidity sensors and integrated IAQ modules for air purifiers, HVAC systems, fresh-air ventilation, air conditioners and indoor air quality monitors.
What Should an Indoor Air Quality System Measure?
Indoor air quality monitoring may involve multiple sensing parameters. The right combination depends on the finished equipment, the pollutants of interest and the required control strategy.
Carbon Dioxide
CO₂ monitoring provides useful input for ventilation management in occupied spaces, offices, classrooms and HVAC systems.
PM1 / PM2.5 / PM10
Particle sensing supports air purifiers, indoor air monitors and filtration systems by monitoring airborne particulate pollution.
VOC / TVOC
VOC sensing supports the evaluation of changes in indoor gaseous pollution and odor-related air quality trends.
Formaldehyde
Dedicated formaldehyde sensors support HCHO concentration monitoring in indoor air quality equipment and smart appliances.
Temperature & Humidity
Temperature and relative humidity are fundamental measurements for thermal comfort and indoor environmental control.
Multi-Parameter IAQ
Integrated sensor modules combine different environmental sensing functions to simplify OEM system integration.
Indoor Air Quality Sensor Solutions by Application
Different appliances and building systems require different sensing architectures. Explore Winsen IAQ solutions according to your specific application.
Air Purifier Sensor Solution
PM, VOC, HCHO and integrated sensing for intelligent purification equipment.
HVAC Indoor Air Quality Sensor Solution
CO₂, PM, VOC, HCHO and environmental sensing for HVAC control.
Fresh Air & Ventilation Sensor Solution
Air-quality sensing for fresh-air systems and ventilation equipment.
Demand-Controlled Ventilation
CO₂-centered sensing for demand-based ventilation strategies.
Indoor Air Quality Monitor Sensor Solution
Multi-parameter sensing for connected and standalone IAQ monitors.
Air Conditioner Air Quality Sensor Solution
Environmental sensing for smart residential and commercial air conditioners.
Multi-in-One IAQ Sensor Module Solution
Integrated modules combining multiple environmental measurements.
Indoor Formaldehyde Monitoring
Dedicated electrochemical HCHO sensing for indoor air monitoring.
School & Classroom IAQ Sensor Solution
CO₂, PM and comfort monitoring for classrooms and educational buildings.
VOC & Odor Monitoring Sensor Solution
VOC and air quality trend sensing for purification and ventilation control.
Dedicated Sensors or Multi-in-One IAQ Modules?
Selecting the appropriate sensing architecture is important for the design of air purifiers, HVAC equipment, air quality monitors and smart appliances.
Dedicated sensors provide flexibility for independent sensor placement and parameter-specific optimization. Multi-in-one modules integrate different sensing functions to simplify system development.
- Flexible sensing parameter selection
- Independent or integrated sensor architecture
- Compact module options for OEM applications
- Consider airflow, enclosure and interface requirements
From Air Quality Detection to Intelligent Control
Indoor air quality sensors provide measurement data that can support automatic ventilation, air purification, filtration and Building Management System (BMS) control. Sensor selection should consider not only the monitored parameters but also how the data will be used by the system.
Explore Our Indoor Air Quality Sensors
Browse Winsen CO₂, particulate matter, VOC, formaldehyde, ozone, temperature and humidity sensors and multi-in-one IAQ modules. Filter by sensing parameter to find the products relevant to your project.
Which IAQ Parameters Does Your Application Need?
The following matrix provides a general starting point for indoor air quality sensor selection. Actual configurations depend on product functions, target pollutants and OEM system requirements.
| Application | CO₂ | PM | VOC | HCHO | T&H | Multi-in-One |
|---|---|---|---|---|---|---|
| Air Purifier | ○ | ● | ● | ○ | ○ | ● |
| HVAC Systems | ● | ○ | ○ | ○ | ● | ○ |
| Fresh Air & Ventilation | ● | ● | ○ | ○ | ○ | ○ |
| Demand-Controlled Ventilation | ● | — | ○ | — | ○ | — |
| IAQ Monitor | ● | ● | ● | ● | ● | ● |
| Air Conditioner | ○ | ● | ○ | ○ | ● | ● |
| School & Classroom | ● | ● | ○ | ○ | ● | ○ |
● Recommended ○ Optional — Not a primary parameter. This is an application-level guide, not a fixed product specification.
Compare Winsen Indoor Air Quality Sensors
Compare sensor principles, characteristics, target gases, detection ranges and dimensions. For assistance, contact sales@winsensor.com .
| Model | Detection Principle | Characteristics | Target Gas / Parameter | Detection Range | Size |
|---|---|---|---|---|---|
WS-M1300 |
PM, CO2, TVOC, CH2O, CO, T & H | ||||
PAS CO2 |
PAS | UART output to detect CO2, temp.&hum, Small size and SMD assembly allowed | Carbon Dioxide CO2 | 0~32000ppm(optional) | |
ZS13A |
Semiconductor, Module | Fully calibrated, Wide power supply voltage range, from 2.2V to 5.5V, Digital output, standard I²C signal | Temperature and Humidity | ||
ZP16-A |
Semiconductor | High sensitivity, Excellent long-term stability | Formaldehyde, benzene, carbon monoxide, hydrogen, alcohol, ammonia, smoke of cigarette, essence &etc | VOC:0-2.000mg/m3 CO2:350-2000ppm CH2O:0-1.000mg/m3 | 24×20×15mm（L×W×H） |
ZM106-VOC |
MEMS | Small size, Low power consumption | VOC, Ethanol, formaldehyde, toluene and other organic volatiles | 0～10mg/m3 | |
ZE40-TVOC |
Electrochemical | High sensitivity, high resolution | TVOC | 0~5 ppm | |
ZE08K-CH2O |
Electrochemical | High sensitivity &resolution, Low power consumption, Long life | CH2O, HCHO, Formaldehyde | 0～5ppm | |
ZPS20 |
Semiconductor | High sensitivity,Excellent long-term stability | Formaldehyde, benzene, VOC, Temperature, Relative humidity | 0~10mg/m3 | |
ZP16 |
Semiconductor,Modle | High sensitivity,Excellent long-term stability | Formaldehyde, benzene, carbon monoxide, hydrogen, alcohol, ammonia, smoke of cigarette, essence &etc. | 0-10mg/m3 | |
ZH10-VHT |
Laser spectral absorption | Good consistency;Real time response;Accurate data; | PM2.5,VOC,Temperature,Humidity | 38×35×12mm(L×W×H) | |
|
ZH10-F |
Laser spectral absorption | Good consistency;Real time response;Accurate data; | PM1.0,PM2.5,PM10 | 0-1000 μg/m³ | 38×35×12mm(L×W×H) |
ZS21 |
Semiconductor, Module | Fully calibrated, Wide power supply voltage range, from 2.0V to 5.5V,Digital output, standard I²C signal | Temperature and Relative Humidity | ||
ZPHS01C |
Module, electrochemical, semiconductor VOC sensor, laser particle sensor, NDIR CO2 sensor and temperature & humidity sensor | This module integrates Electrochemical formaldehyde, Semiconductor VOC sensor, Laser particle sensor, NDIR CO2 sensor and temperature & humidity sensor. | PM2.5, CO2, CH2O, TVOC,Temperature&Humidity | CO2: 400~5000ppm; PM2.5: 0-1000μg/m³; CH2O: 0-1.6ppm; VOC: 4 level; Temperature: 0-65℃ (Accuracy±0.5℃); Humidity: 0-100%RH (Accuracy±3%) | 62.5mm (L) x 61mm(W) x 25mm(H) |
ZPHS01B |
Module | See Manul | CO2. PM2.5. CH2O. O3. CO. TVOC. NO2. Temperature. Humidity | See Manul | 135 x 50 x 26.2mm (L x W x H) |
ZH07 |
Laser | Good consistency, Real time response, Low power consumption, RESET compliant | particulate matters PM1.0, PM2.5, PM10 | 0-1000μg/m³ | 48×40×12.5mm(L×W×H) |
ZH03B |
Laser | Good consistency, Real time response | PM1.0,PM2.5,PM10 | 0-1000μg/m³ | 50x32.4x21mm(LxWxH) |
ZPH04 |
IR | Good Stability for long time,Easy to install and use | PM2.5 | 59.5×44.5×20mm（L×W×H） | |
MS-Z3 |
Made of polymer humidity-sensitive material | 1、Wide humidity detected rang;2、Fast response;3、Small Humidity hysteresis error;4、Simple manufacture;5、Easy integration;6、Low cost | Environment relative humidity,temperature | ||
ZS05 |
Temperature and humidity detection | 1、Low cost, Low power consumption, Small sizes;2、High sensitivity;3、Standard IIC digital interface;4、RESET compliant | Environment relative humidity,temperature | ||
ZS03 |
Temperature and humidity detection | 1.Low cost, Low power consumption, Small sizes;2.Single wire serial interface, High sensitivity; 3.Calibrated, digital output;4.RESET compliant | Environment relative humidity,temperature | ||
WHT20 |
MEMS capacitive humidity sensor | 1、High accuracy ±3.0% RH and ±0.5℃;2、Wide power supply voltage range, from 2.0V to 5.5V;3、SMD package suitable for reflow soldering;4、Quick response and strong anti-interference ability;5、Excellent long-term stability under high humidity condition | Environment relative humidity,temperature | ||
ZCE04B |
Module，catalytic, electrochemical | The detection of toxic and harmful gas and combustible gas in special places will give an alarm when the concentration exceeds the standard to remind people to evacuate | CH4（1%LEL）, CO（1ppm）, H2S（1ppm）, O2（0.1%LEL） | 0-100%LEL ,0-1000ppm ,0-100ppm ,0-30%LEL | 41×41×21.6 |
ZEHS04 |
Module, electrochemical | Urban atmospheric environmental monitoring; Unorganized emissions of pollution monitoring at factory sites; Portable instruments, air quality monitoring equipment, and smart home equipment. | CO, SO2, NO2, O3 (Scalable PM2.5, PM10, Temperature, Humidity) | See manual | 12cm*10cm*6cm (L*W*H) |
ZE27-O3 |
Module, electrochemical | Portable O3 detector, air-quality monitor device, Ozone disinfection cabinet, smart home device, etc. | O3 | 0～10ppm | 17.1x19.2x4.5mm |
ZE25-O3 |
Module, electrochemical | Portable O3 detector, air-quality monitor device, Ozone disinfection cabinet, smart home device, etc. | O3 | 0～10ppm | 23x25.5x4.4mm |
ZE14-O3 |
Module, electrochemical | Ozone disinfection cabinet, smart home devices, etc. | O3 | 0～100ppm | 22x26x18.2mm |
ZE08-CH2O |
Module，electrochemical | Portable detector, air-quality monitor, air cleaner, air renewal system, air conditioner, smart home. | CH2O, HCHO, Formaldehyde | 0～5ppm | 23x25x4.4mm |
ZP07 |
Module，semiconductor | High sensitivity,excellent long term stability, calibrated before shipment 10 seconds to 3 minutes with auto-preheating function Faulty auto-check | formaldehyde, benzene, carbon monoxide, hydrogen, alcohol, ammonia, smoke of cigarette, essence &etc. | Output 0－3 grade pollution signal | 24×20×16 |
MH-Z1911A |
non-dispersive infrared (NDIR) principle | High sensitivity, low power consumption; Temperature compensation, excellent linear output; Multiple output modes: UART, PWM | CO2(Carbon dioxide) | 400~10000ppm optional | 32.9x19.7x8.6mm (LxWxH) |
MH-Z19E |
non-dispersive infrared (NDIR) principle | 1. High sensitivity, low power consumption; 2, Good stability; 3. Temperature compensation, excellent linear output; 4. Multiple output modes: UART, PWM; 5.RESET compliant | CO2 | 400~10000ppm optional | 32.9x19.7x8.6mm (LxWxH) |
MH-Z19C |
non-dispersive infrared (NDIR) principle | 1. Chamber is gold plated; 2. High sensitivity, low power consumption; 3. Good stability; 4. Temperature compensation, excellent linear output;5.RESET compliant | CO2 | 400~10000ppm optional | 32.9x19.7x8.6mm（LxWxH） |
MP905 |
Semiconductor | High sensitivity to benzene,toluene,formaldehyde,alcohol,smoke,lighter gas,paints | alcohol, smoke, formaldehyde, toluene, benzene,lighter gas,paint &etc. | 0.5-1000ppm(C2H5OH) | φ9.4×7.5 |
MP801 |
Semiconductor | High sensitivity to C6H6、C7H8、CH2O、C2H5OH、smoke | air quality：C6H6、C7H8、CH2O、C2H5OH、smoke | 0.5-1000ppm(C2H5OH) | φ9.4×7 |
MP503 |
Semiconductor | High sensitivity to C2H5OH、smoke、iso-butane、CH2O | C2H5OH、smoke、iso-butane、CH2O | 10-1000ppm(C2H5OH) | φ9.4×7 |
GM-502B |
Semiconductor、MEMS | MEMS technology, good shock resistance, small sizes and low power consumption | VOC、C2H5OH、CH2O、C7H8 | 1-500ppm | 5×5×1.55 |
Product specifications are displayed from the Winsen product database. Please refer to the latest official product documentation for final technical selection.
Why Choose Winsen for Indoor Air Quality Sensing?
Winsen provides multiple sensing technologies and sensor module options for appliance manufacturers, HVAC equipment suppliers and environmental monitoring system integrators.
Broad Sensor Portfolio
CO₂, PM, VOC, formaldehyde, temperature, humidity and multi-parameter IAQ modules.
Multiple Sensing Principles
NDIR, photoacoustic, electrochemical, semiconductor/MEMS and laser particle sensing.
OEM Integration Options
Different module architectures, interfaces and integration options for embedded products.
Sensor to Integrated Module
Dedicated sensors and multi-in-one platforms for different mechanical and electrical designs.
Indoor Air Quality Knowledge & Applications
Explore Winsen technical articles covering indoor pollutants, sensing technologies, environmental monitoring and sensor applications.
More Indoor Air Quality Sensor Products
Explore additional Winsen IAQ sensors and modules available in the current product category.
IAQ Indoor Air Quality Monitor WS-M1300
Photoacoustic PAS Carbon Dioxide CO2 Sensor
PAS
ZS13A Temperature and Humidity Sensor Module
Semiconductor, Module
ZP16-A Air-Quality Detection Module
Semiconductor
Digital ZM106-VOC Module
MEMS
Air-Quality Detection Module ZE40-TVOC
Electrochemical
Electrochemical HCHO Formaldehyde Sensor ZE08K-CH2O
Electrochemical
ZPS20 Digital Sensor Module - VOC Temperature Humidity
Semiconductor
ZP16 Air-Quality Detection Module
Semiconductor,Modle
ZH10-VHT Compact 4-in-1 Air Quality Sensor Module
Laser spectral absorption
Indoor Air Quality Sensor FAQs
What parameters are commonly measured for indoor air quality?
Common indoor air quality parameters include CO₂, PM2.5, PM10, VOC, formaldehyde, temperature and relative humidity. The combination depends on the application and monitoring requirements.
What is the difference between CO₂, VOC and PM2.5 sensing?
CO₂ monitoring supports ventilation assessment in occupied spaces. VOC sensors respond to certain gaseous pollutants, while PM2.5 sensors detect fine airborne particles.
Which sensors are commonly used in air purifiers?
Particle sensors are commonly used for particulate monitoring. Depending on the purifier design, VOC, formaldehyde and multi-parameter sensing functions may also be included.
Which sensors are suitable for HVAC and ventilation systems?
HVAC and ventilation systems may use CO₂ and temperature/humidity sensors as core inputs. PM, VOC and other sensors can be integrated according to the system's air quality functions.
When should I select a multi-in-one IAQ sensor module?
Multi-in-one modules are useful when several environmental parameters must be monitored within a compact product. Dedicated sensors provide greater flexibility for independent placement.
Does Winsen provide IAQ sensors for OEM projects?
Winsen offers dedicated sensors and integrated modules for OEM applications. Product selection should consider size, interfaces, measuring parameters, environmental conditions and system design.
Build Your Indoor Air Quality Sensing Solution with Winsen
Tell us what you are developing, which parameters you need to measure and your size, interface and environmental requirements. Our team can help evaluate suitable sensing options for your project.
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