Acoustic sound alarms; Alarm sensors; Alarms for the detection of inflammable gases; Burglar alarms; Carbon dioxide detectors; Carbon monoxide detectors; Device for testing the function and effectiveness of smoke detectors, carbon monoxide detectors and heat detectors featuring an aerosol spray; Electric, electronic, or electrochemical oxygen monitors and sensors for environmental use; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Fire alarm and emergency evacuation devices, namely, fire alarm control panels, smoke detectors, heat detectors, alarm pull stations, audible and visible notification appliances, strobes, sirens, bells, horns, and speakers; Fire and smoke detectors; Fuel pump testers; Gas alarms; Gas appliance alarm timer for detecting and alerting the presence of gas flow after a prescribed period of time; Gas detectors for detecting the presence of gas