About Sensirion
Sensirion is one of the world’s leading developers and manufacturers of sensors and sensor solutions that improve efficiency, health, safety, and comfort. The product range includes environmental sensors for the measurement of humidity and temperature, volatile organic compounds (VOC), nitrogen oxides (NOx), formaldehyde, carbon dioxide (CO2) and particulate matter (PM2.5), gas and liquid flow sensors, differential pressure sensors as well as gas leakage sensors. Founded in 1998, the company now employs around 1’200 people at its headquarters in Stäfa, Switzerland and in numerous international subsidiaries. As a pioneer in innovation, Sensirion develops solutions for the specific needs of customers and partners from the automotive, industrial, medical, HVAC and consumer electronics markets, as well as high-quality products for cost-efficient mass production.
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Holistic Air Quality Monitoring Made Simple with SEN6x
The SEN6x sensor platform integrates up to 9 environmental parameters into one compact solution: PM1, PM2.5, PM4, PM10, T, RH, VOC Index, NOx Index, CO2. It simplifies design for HVAC systems, IAQ monitors, and air purifiers, enabling accurate, real‑time insights that support healthier living and working spaces
Fresh air starts here: STCC4 CO₂ sensor for healthier indoor environments
The STCC4 CO₂ sensor delivers compact, precise measurement for IAQM, building control, and appliances such as air purifiers and smart thermostats. Designed for reliability and efficiency, it helps optimize ventilation and energy use while ensuring healthier indoor spaces.
Product Ranges and Application
Environmental and flow sensors
Humidity and Temperature Sensors
Gas and Liquid Flow Sensors
Mass Flow Controllers
Differential Pressure Sensors
CO₂ and Formaldehyde Sensors
Featured Products
SCD43 - High CO₂ accuracy with comprehensive building standard compatibility
The SCD43 delivers a best-in-class accuracy specification of +- (30pm + 3% m.v.) as well as compatibility with the most stringent building standards, including ANSI/ASHRAE 62.1-2022 Draft Addendum d, California Title 24, RESET® grade B and WELL Building Standard™ (WELL v2). Furthermore, SCD43 features an extended specified range up to 5'000 ppm and single shot operation mode.
SEN66 - Simplifying indoor air quality sensing with the SEN66 sensing platform for PM, RH/T, VOC, Nox and CO2 measurements
Experience the future of air quality sensing with the compact and powerful SEN66. It combines multiple sensors in a never-before-seen form factor and can measure up to nine environmental parameters (PM1, PM2.5, PM4, PM10, T, RH, VOC Index, NOx Index, CO2). The innovative design simplifies integration, reduces costs, and allows for customization through the different variants within the SEN6x family. At the core of the SEN66 is a brand-new, miniaturized, MEMS-based particulate matter sensing component – the SPS6x.
SFM3505-300 next generation compact flow sensor
The SFM3505-300 is part of our next-generation compact digital flow meter family, succeeding the proven SFM3119 and SFM3100. Featuring a completely re-engineered architecture, it delivers best-in-class performance with ultra-low noise and high accuracy across an extended flow range from –150 to +300 slm. The sensor is offered in two performance tiers, SFM3505-300 with standard (2.3% m.v.) and SFM3505-300-X with high (1.5% m.v.) accuracy.
STCC4 CO₂ sensor with unmatched form factor for indoor air quality applications
STCC4 offers one of the smallest form factors on the market for direct measurement of CO2, unlocking new applications previously limited by size and cost constraints. Designed for seamless integration into compact electronic devices, the sensor is a groundbreaking newcomer in the CO2 sensor market. Utilizing the latest technological advancements in thermal conductivity sensing, the fully factory calibrated STCC4 provides the accuracy needed for indoor air quality applications at a low current consumption. Both accurate signal compensation and monitoring of relevant indoor environmental parameters are achieved when STCC4 is combined with our industry-leading temperature and humidity sensors. Optimized for high volume assembly through its SMD design and tape & reel packaging, it is suitable for a wide range of applications, including indoor air quality monitors, smart thermostats, air conditioners and much more.
Featured Applications / Techologies
| Medical technology | Industry, semicon, logistics | Life sciences & diagnostics | HVAC/appliences | Consumer electronics | Mobility |
| Smart inhaliers | Battery energy storage systems | Bioreactors | Refrigerators | Air purifiers | Air intake |
| Metabolic breath analysis | Chip mounters | Condition monitoring & instrument diagnostics | Demand-controlled ventilators | Thermostats | Antifogging |
| Subcutaneous drug delivery | Clean cooking | Costum manifold solutions | Room sensors | Indoor air quality monitors | Brake-by-wire systems |
| Mechanical ventilators | Combustion control | DNA sequencing | VAV controllers | Smart speakers | Humanoid robots |
| Infusion | Front opening unified pods | Flow cytometry | Filter monitoring | Metabolic breath analysis | H2 monitoring in fuel cells |
| Anasthesia machines | Gas analyzers | Gas chromatography | Refrigerant leakage detection | LiDAR systems | |
| CPAP devices | Gas meters | Liquid chromatography | Air conditioners | Safety of electric vehicles | |
| Heart lung machines | Humidity in oil | Mass spectrometry | Steer-by-wire systems | ||
| Nitric oxide therapy | Photoresist dosing | Microfluidics | |||
| Urine flow measurement | Surface coating/treatment | Thermal analysis | |||
| Gas purging | |||||
| Transport of pharmaceutical goods | |||||
| Transport of perishable goods |