B5W LD0101 Monitor / Photon - indoors, counting 0.5 micron, 2.5 micron
An "Air and Sound Pollution Monitoring System" gives a data set regarding the environmental value and provide controllable modulation to enhance its environment.
This a private DIY project. The sensor calibration might not be accurate, so the data should not be considered in comparison with public sensors, but rather to compare day to day. Sensors used: Sharp GP2Y1010AU0F for dust, DHT 22 for temp and humidity.