JINGCHEN

Air analysis apparatus; Air quality measurement apparatus, namely, particle counters; Alarms for the detection of inflammable gases; Carbon dioxide detectors; Carbon monoxide detectors; Combustible gas concentration detectors; Device for testing the function and effectiveness of smoke detectors, carbon monoxide detectors and heat detectors featuring an aerosol spray; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Electronic carbon dioxide monitors, other than for medical purposes; Gas sensors for measuring gas concentration; Gas testing instruments; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Security alarm controllers