Mouser Electronics, Inc., the New Product Introduction (NPI) leader™ empowering innovation, is stocking a wide range of authorised products from Sensirion, a leading manufacturer of environmental sensors. Since 2014, Mouser and Sensirion have partnered to provide engineers with the components and solutions needed to monitor indoor air quality, including carbon dioxide (CO₂), particulate matter (PM), and volatile organic compounds (VOCs). While sensing technologies have advanced significantly, indoor air quality monitoring remains complex due to the wide range of environmental factors that must be measured. This challenge is especially evident in hardware system design, where engineers must carefully balance performance, accuracy, and power consumption.
Refrigerant and formaldehyde detection
Sensirion’s SGD4x A2L sensors, available from Mouser, are specifically designed for the HVACR industry as a complete A2L refrigerant detection system (RDS). The sensors are based on the thermal conductivity measurement principle and feature a dual-contact relay output that can trigger a signal relay to start a blower, switch off the load, or warn a control board. With their fast response time and broad compatibility with A2L refrigerants thanks to their versatile multi-refrigerant calibration, these sensors are an essential component for both residential and commercial HVACR systems.
The SFA40 sensor from Sensirion is designed to detect formaldehyde, a common indoor pollutant found in wood-based furniture and flooring, paints, and cosmetics. Measuring just 10 × 13 × 2.4 mm, this compact sensor is designed for easy integration into air purifiers, indoor air quality monitors and air conditioners.
Compact CO₂ and multi-parameter sensing
The miniature STCC4 sensor provides direct CO₂ measurement in an ultra-small 4 × 3 × 1.2 mm package. Designed for seamless integration into compact electronic devices, it enables new applications previously limited by size and cost constraints. Leveraging the latest technological advancements in thermal conductivity sensing, the fully calibrated STCC4 delivers the accuracy required for indoor air quality applications with low current consumption. Optimised for high-volume assembly through its SMD design and tape-and-reel packaging, it is suitable for a wide range of applications, including residential, consumer, and wearables for CO₂ monitoring during sleep.
The Sensirion SEN6x sensor module family is a multi-parameter air quality monitoring platform that combines particulate matter, relative humidity, temperature, VOC, NOx, and either CO₂ or formaldehyde sensing within a compact footprint. Developed using Sensirion’s extensive environmental sensing expertise, the SEN6x modules deliver high measurement accuracy and extended operational lifetime in a highly optimised form factor. The integration of multiple sensing technologies and embedded processing algorithms into a single device reduces design and integration effort, streamlines supply chain requirements, and supports rapid product deployment while ensuring best-in-class performance.
To learn more about Sensirion products available from Mouser, visit https://www.mouser.com/manufacturer/sensirion/. For more Mouser news and our latest new product introductions, visit https://www.mouser.com/newsroom/.


