Environmental Sensor Node "SEN66"
Suitable for applications that require compliance with IAQ standards such as RESET!
The "SEN65" is a sensing platform for measuring PM, RH/T, VOC, NOx, and CO2. By combining multiple sensors in a form factor, it can measure up to 9 environmental parameters (PM1, PM2.5, PM4, PM10, T, RH, VOC index, NOx index, CO2). Its innovative design allows for simplified integration, cost reduction, and customization. Additionally, the core of the SEN66 is the new compact MEMS-based particulate matter sensing element, the SPS6x. 【Specifications (partial)】 ■ Mass concentration range: 0 - 1000μg/m3 ■ Standard relative humidity accuracy: 4.5% RH ■ Specified CO2 measurement range: 0 - 40000ppm ■ Accuracy: ±50.0 ■ Sensor output: 0-500 VOC Index *For more details, please download the PDF or feel free to contact us.
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【Other Specifications】 ■Interface: I2C ■Size (LxWxH): 55.5 x 25.6 x 21.5mm ■Standard Temperature Accuracy: 0.45°C *For more details, please download the PDF or feel free to contact us.
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For more details, please download the PDF or feel free to contact us.
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Exhibited at Smart Sensing 2026.
Sensirion exhibited at the "Automotive Technology Exhibition 2026," held at Tokyo Big Sight from June 10 (Wednesday) to June 12 (Friday), 2026. At this exhibition, we showcased sensor solutions for automotive applications, in addition to environmental sensing and flow sensing. We also presented various measurement demonstrations and new products for the first time at the exhibition, allowing many visitors to see the performance and technological capabilities of our products. We would like to express our heartfelt gratitude to all the attendees. 【Main Demonstration Exhibits】 SCD5x New CO2 Sensor SGD4x Refrigerant Detection Sensor SEN6x Indoor Air Quality Combo Sensor Module SLF3x Liquid Flow Sensor Integrated Combo Module for HVAC (SAEN6) Refrigerant (Propane) Leak Detection Sensor Module (SACD4) Window Fog Detection Sensor Module (SAAF4)
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We will be exhibiting at Smart Sensing 2026 from June 10 to 12.
Sensirion AG will be exhibiting at the exhibition "Smart Sensing 2026" held at Tokyo Big Sight from June 10 (Wednesday) to June 12 (Friday). At this exhibition, in addition to environmental and flow sensing, we will also introduce refrigerant detection solutions and sensor solutions for automotive applications. We will showcase measurement demonstrations and new products that will be unveiled for the first time at the exhibition, providing an opportunity for you to directly confirm the performance and technological excellence of our products. We hope you will stop by. ■ Venue: Tokyo Big Sight ■ Booth No.: F - 07 (West Hall 3) ■ Exhibits: Refrigerant detection sensor measurement demo CO2 sensors (NDIR, photoacoustic, thermal conductivity) measurement demo Indoor air quality combo sensor module (temperature and humidity, PM, VOC, NOx, CO2, HCHO) measurement demo Liquid flow sensor measurement demo Anti-fog detection/automatic defrost sensor (SAAF series) measurement demo Various physical samples All of our staff are looking forward to welcoming you.
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WELL/RESET certification compatible! The SEN6x air quality sensor module is ideal for building automation.
The WELL/RESET certification, which is gaining attention in building management and health management. The 9-in-1 air quality sensor module "SEN6x" efficiently measures PM, CO₂, VOC, NOx, and more simultaneously with one device, contributing to the reduction of design and operational costs. ■Features - Manages PM1/PM2.5/PM4/PM10, temperature, humidity, VOC, NOx, and CO₂ all in one with 9-in-1 capability - Supports building management, ESG, and health management with WELL/RESET certification compliance - Space-saving design (55.5×25.6×21.5mm, 1 connector, click-in) - Built-in algorithms for data correction and automatic index calculation - Energy-efficient (up to 85% reduction), long lifespan, and dustproof design ■Benefits of Implementation - Reduces design and assembly labor by managing multiple parameters with one module - Streamlines the acquisition and operation of WELL/RESET certification - Enhances energy efficiency and reduces operational costs - Facilitates data management and report generation through BEMS and cloud integration ■Main Applications - Thermostats - VAV controllers - IAQ monitors - Air purifiers For product specifications or inquiries, please contact us or use the document download option.
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Indoor air quality affects health: Air purifiers and sensor technology SEN66
We spend much of our daily lives indoors, and indoor air can be up to five times more polluted than outdoor air. The introduction of air purifiers and high-precision sensors is essential for real-time detection of harmful substances such as PM2.5, VOCs, and CO₂, contributing to the creation of a healthy environment. Sensirion's SEN66 features an innovative compact design that can measure up to nine environmental parameters (PM1, PM2.5, PM4, PM10, temperature, humidity, VOC index, NOx index, CO₂). It simplifies integration and reduces costs. 【Key Features】 ■ Compliance with healthy building standards ■ Cost-effective combo module with multiple sensors ■ High-precision measurement and support for autonomous device control Experience the future of air quality sensing with the SEN66. 【Specifications (partial)】 ■ Mass concentration range: 0 - 1000μg/m3 ■ Standard relative humidity accuracy: 4.5% RH ■ Specified CO2 measurement range: 0 - 40000 ppm ■ Accuracy: ±50.0 ■ Sensor output: 0-500 VOC Index
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Exhibited at Smart Sensing 2025.
We exhibited at the exhibition "Smart Sensing 2025," held at Tokyo Big Sight from June 18 to 20, 2025. A diverse range of technologies and products that expand future possibilities, from sensor technology to AI and data utilization services, were showcased, and many visitors came to our booth. This time, along with our environmental sensors, flow sensors, and automotive modules, we also displayed six types of demonstrations. SEN66: Indoor Air Quality Combo Sensor Module SGD43S: Refrigerant Detection Sensor SCD43 / STCC4: CO₂ Sensor SLF3S: Liquid Flow Sensor SAAF: Fogging Detection and Automatic Defrost Sensor Visitors had the valuable opportunity to see products that cater to a wide range of applications, including air quality measurement, gas leak detection, visualization of factory safety management, and flow measurement and control in the semiconductor, medical, and research fields, while experiencing the sensors' fast response and high precision. Thank you very much to everyone who visited our booth. We sincerely appreciate the many attendees who contributed to the lively atmosphere of the exhibition each day.
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Sensirion's mission is to provide sensors and sensor solutions with excellent design and reliability, becoming the number one partner for our customers. We aim to elevate the standards of sensor technology by leveraging technology intelligence. In doing so, we contribute to improving the sustainability, efficiency, health, safety, and quality of life for people and businesses. We pursue a common goal of shaping the future of the automotive industry, industrial sectors, building and HVAC technology, medical technology, and consumer electronics through innovation in collaboration with our partner companies and customers. Sensirion was founded in 1998 and currently has about 1,000 employees at its headquarters in Stäfa, Switzerland, and numerous subsidiaries around the world.










