SEN66

SEN66 is the flagship environmental sensor node from Sensirion in a housed module package (54.6 x 24.1 x 21.1 mm), measuring particulate matter (PM1, PM2.5, PM4 and PM10), temperature, relative humidity, VOC and NOx indexes and true CO2 over a 0 to 40,000 ppm range, for demand-controlled ventilation and indoor air-quality systems. The complete parameter set with a real CO2 channel is the selection point: ventilation standards and building certifications ask for measured CO2 rather than a VOC-derived estimate, and the SEN66 delivers it in the same node as the particle and gas indexes, so one module satisfies the full monitoring specification. Selection advice: within the SEN6x platform, step down deliberately - the SEN65 drops the CO2 channel, the SEN62 keeps only particles and RH/T, and the SEN68 trades CO2 for formaldehyde, while the SEN69C is the variant that combines CO2 and formaldehyde. Match the full SEN66 code to your reporting requirements before ordering. Parameters verified against Sensirion documentation.