The AirBeam2 sensor measures particulate matter (PM). It measures 3 categories of particle sizes:
- PM1 (PM < 1 micrometer in diameter),
- PM5 (PM < 2.5 micrometers in diameter), and
- PM10 (PM < 10 micrometers in diameter)
The AirBeam2 does not measure outdoor temperature or relative humidity. The temperature and relative humidity sensors are inside the AirBeam2, so these measure the temperature and relative humidity inside the sensor.
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