These components allow for the measurement of different environmental variables using individual devices or the integration of several air quality parameters into a single module. The SGD4x A2L sensors are designed for HVACR systems and function as detection devices for A2L refrigerants.

Its measurement principle is based on thermal conductivity, and the sensors have a double-contact relay output. This output can be used to activate other system components when a specific condition is detected, such as starting a fan, disconnecting a load, or sending a signal to a control board. The series uses calibration for various A2L refrigerants, allowing it to be used in residential and commercial HVACR systems that utilize different compatible refrigerants.

The SFA40 is specifically designed to measure formaldehyde in the air. This compound can be present in various materials and products used indoors, including certain furniture, wood paneling, paints, and cosmetics.

The sensor measures 10 × 13 × 2.4 mm and is designed for integration into equipment such as air purifiers, indoor air quality monitoring systems, and air conditioning units. The STCC4 is a miniaturized sensor for direct CO₂ measurement. It measures 4 × 3 × 1.2 mm and uses thermal conductivity-based detection technology. The device is supplied factory-calibrated and is designed for applications with space and energy constraints.

Its surface-mount (SMD) packaging and availability in tape and reel formats allow for integration into automated electronic assembly processes. Applications for the STCC4 include residential and consumer devices, as well as portable electronic equipment and wearable devices for CO₂ monitoring.

The SEN6x family brings together different environmental detection technologies in modules intended for multi-parameter air quality monitoring systems.

Depending on the configuration, these modules can measure particulate matter, relative humidity, temperature, volatile organic compounds (VOCs), nitrogen oxides (NOx), and CO₂ or formaldehyde. The modules also incorporate embedded processing algorithms, allowing for the integration of various measurement and processing functions into a single device.

Integrating different sensors into a single module can simplify the design of equipment that needs to simultaneously monitor several environmental variables by reducing the number of independent sensing components. The SGD4x, SFA40, and STCC4 sensors, along with the SEN6x modules, are currently part of Mouser Electronics' product catalog.