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Actinometers; Air analysis apparatus; Anemometers; Barometers; Computer application software for mobile phones, portable media players, and handheld computers, namely, software for information management and indoor air quality device control.; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Gas detectors for detecting the presence of gas; Gas sensors for measuring gas concentration; Gas testing instruments; Hygrometers; Meteorological instruments; Photometers; Radiation detectors; Temperature sensors