9 Recorded content, namely, downloadable computer files with recorded voice, data, graphics, images, audio and video content in the field of sending and receiving announcements, alarms, voice-over alarms, alerts, warnings, pre-recorded messages, tone signals as well as for industrial communication and for controlling and maintaining safety, security and maintenance features of public address, intercom, and general warning, building access and alarm systems; software for sending and receiving announcements, alarms, voice-over alarms, alerts, warnings, pre-recorded messages, tone signals as well as for industrial communication and for controlling and maintaining safety, security and maintenance features of public address, intercom, and general warning, building access and alarm systems; downloadable mobile applications for sending and receiving announcements, alarms, voice-over alarms, alerts, warnings, pre-recorded messages, tone signals as well as for industrial communication and for controlling and maintaining safety, security and maintenance features of public address, intercom, and general warning, building access and alarm systems; information technology and audio-visual, multimedia and photographic devices, namely, handheld computers, portable telecommunication instant messaging devices, notebook computers, laptop computers, tablet computers and smartphones for sending and receiving announcements, alarms, voice-over alarms, alerts, warnings, pre-recorded messages, tone signals as well as for industrial communication and for controlling and maintaining safety, security and maintenance features of public address, intercom, and general warning, building access and alarm systems; safety, security, protection and signalling devices, namely, handheld computers, portable telecommunication instant messaging devices, notebook computers, laptop computers, tablet computers, smartphones and electric alarm control devices for acoustic and visual indication of events, alarms and faults in industrial communication systems; navigation, guidance, tracking, targeting and map making devices, namely, electric navigational instruments, GPS tracking devices, wearable activity trackers; measuring, detecting and monitoring instruments, indicators and controllers, namely, handheld computers, portable telecommunication instant messaging devices, notebook computers, laptop computers, tablet computers, smartphones and electric control devices for adjusting the loudspeaker level and monitoring the functioning of an industrial communication system; all of the aforesaid goods excluding the goods of air sensors for measuring air quality, exterior air sensors for measuring air quality, particle sensors for recording the particle load of volumes of air and/or gas, electric and electronic controllers for controlling the supply of fresh air depending on air quality and/or particle load, electric and electronic controllers for air and/or particle sensors, goods for use with dust control systems, goods for use with dust collector control systems, and individual parts and assemblies for the aforesaid goods