The Grove - SEN55 is a high-performance all-in-one environmental sensor that accurately measures particulate matter (PM1.0, PM2.5, PM4, PM10), VOC, NOx, humidity, and temperature. Powered by Sensirion’s advanced sensing technology, this sensor module is ideal for applications in HVAC, air purifiers, smart homes, industrial monitoring, and air quality detection. Its proprietary algorithms ensure accurate digital signal output and long-term reliability, while the Grove I2C interface simplifies integration with platforms such as Arduino, Raspberry Pi, and Seeeduino — no coding required. Key Features All-in-one sensing solution for PM, VOC, NOx, RH, and temperature High accuracy and stability with pre-calibrated digital outputs Low power consumption: 6.8 mA in Measurement Mode, 2.6 mA in Idle Laser scattering method for precise particulate matter detection 8 types of environmental data output every 1 second 10+ years of robust performance with continuous 24/7 operation Easy plug-and-play integration via Grove I2C interface Applications Heating, Ventilation, and Air Conditioning (HVAC) systems Air quality monitoring in homes and offices Respiratory healthcare & harmful gas alarms Environmental sensing for smart farms Industrial air quality and safety monitoring Particulate matter alerts (PM1.0 to PM10) Scientific experiments and research Specification Sensor Module Parameter Value Sampling Interval 1 ± 0.03 s Lifetime (24h operation) >10 years Acoustic Emission 24 dB(A) Acoustic Drift +0.5 dB(A) / year Particulate Matter PM Type Size Range (µm) PM1.0 0.3 – 1.0 PM2.5 0.3 – 2.5 PM4 0.3 – 4.0 PM10 0.3 – 10.0 Temperature & Humidity Parameter Accuracy Temperature (typical) ±0.45 °C (@ 15–30°C, 50% RH) Temperature (max) ±0.7 °C (@ 15–30°C, 50% RH) Humidity repeatability < 60 s Gas Measurement Metric VOC Index NOx Index Output Range 1 – 500 1 – 500 Device Variation