This is a placeholder topic for “PM2.5 Sensor Module - Laser Sensing” comments.
Particle pollution – PM10 and PM2.5 has become a hot issue in recent years. While the term PM is simple, PM itself is a relatively complex mixture with extremely small particles and liquid droplets that float around in the air. Researchers say minute particle pollution as indicated by high PM2.5 readings will cause a spike in the mortality rate of patients suffering heart and lung diseases. As a result public concerns on air quality caused by particle pollution has never ceased growing.