Guides & support
Set up your sensor, connect your home, and make sense of your air.
Tagged: AccuracyBrowse all guides
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Accuracy, repeatability, and drift are different things, and each channel in the Sensirion SEN66 behaves differently over the years. Here are the datasheet figures with their conditions, and what to do when a reading looks wrong.
Optical PM sensors estimate mass from scattered light. They are powerful for building telemetry, but aerosol chemistry and particle shape still matter.
CO₂ is the clearest occupancy and ventilation signal in most rooms, but placement, calibration assumptions, and recovery time still shape the interpretation.
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