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 system; 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 system; apps in the nature of computer application 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 system; information technology and audio-visual, multimedia and photographic devices, namely, intercom stations, 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; apparatus, instruments and cables for electricity, namely, electrical transformers, electric cables; safety, security, protection and signalling devices, namely, flashing warning beacons, intercom stations, 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, monitoring circuits and the functioning of an industrial communication system