Sensirion NOx PM RH VOC Environmental Sensor for Particulate Matter Relative Humidity Temperature VOC SEN55-SDN-T

Sensirion SEN55-SDN-T is a leading environmental sensor designed for accurate multi-parameter air quality measurements including nitrogen oxides (NOx), particulate matter (PM), relative humidity (RH), temperature, and volatile organic compounds (VOC). It is part of the SEN5x family of sensors well suited for industrial, HVAC, and environmental monitoring applications.

The sensor module integrates multiple sensing capabilities into a compact platform featuring Sensirion's proprietary STAR engine, which accelerates temperature response times by 2 to 3 times, ensuring reliable data under changing ambient conditions.

It operates within a supply voltage range of 4.5 to 5.5 volts DC and communicates via a digital I2C interface, allowing for simple system integration in embedded monitoring devices.

Accuracy specifications are rigorous: temperature sensing achieves ±0.45°C accuracy, relative humidity is precise to ±4.5%, and particulate matter (PM1 and PM2.5) mass concentration precision is ±5 μg/m3 or 5% margin of variance. PM4 and PM10 concentrations maintain ±25 μg/m3 accuracy. VOC and NOx sensors incorporate built-in compensation and index calculation algorithms for more accurate environmental readings.

The SEN55 sensor finds use in air purifiers, HVAC control, indoor air quality monitors, and other environmental auditing tools. The robust and calibrated sensor outputs support up to eight simultaneous data signals, making the module versatile for complex sensing applications.

Manufactured in China, this sensor module delivers high-quality measurements with low power consumption and a compact design, suitable for continuous monitoring settings. This sensor supports particulate matter measurement including PM1, PM2.5, PM4, and PM10.

It offers highly accurate temperature sensing with ±0.45°C precision. Relative humidity sensing accuracy is ±4.5% for reliable environmental data. Integrated proprietary algorithms enable compensation and index calculations for VOC and NOx gases.

The sensor operates over a supply voltage range of 4.5V to 5.5V for flexible power options. Suitable operating temperature ranges from -10°C to 50°C for various environments. Digital communication via I2C interface supports easy integration into control systems.

Low power consumption ensures efficient use in continuous monitoring applications. Designed for applications such as air purifiers, HVAC systems, and air quality monitoring setups. Manufactured in China with a compact form factor and fast response thanks to Sensirion's STAR engine technology.

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