Radios; Thermo-hygrometers; Webcams; Carbon monoxide detectors; Digital door locks; Electronic carbon dioxide monitors, other than for medical purposes; Electronic locks incorporating biometric iris, fingerprint, voice scanners; Gas alarms; Gas testing instruments; Heads-up displays (HUDs) in the nature of transparent electronic displays for use in general aviation aircraft, projection of data from a mobile device onto a vehicle windshield, providing motorcycle riders with navigational and op...