Class 009: Radon detectors; Particulate matter (PM) sensors; Carbon dioxide detectors; Electronic carbon dioxide monitors, other than for medical purposes; Carbon monoxide detectors; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Air quality measurement apparatus, namely, particle counters; Pollutant sensors; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Dust measuring apparatus; Fine dust analyzing apparatus; Fine dust measuring apparatus; Portable dust measuring apparatus; Portable ultrafine dust measuring apparatus; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Temperature sensors; Sensors for determining temperature; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants
