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A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
Federal Signal Safety and Security Systems Group manufactures campus alerting systems, emergency vehicle lighting, emergency sirens, alarm systems, outdoor warning sirens, and public address systems. Currently, the company has 14 manufacturing facilities in 5 different countries.
A passenger information system, or passenger information display system, is an automated system for supplying users of public transport with information about the nature and the state of a public transport service through visual, voice or other media. It is also known as a customer information system or an operational information system. [1]
A few systems integrate (or communicate) with mobile phones for hands-free talking and SMS messaging (i.e., using Bluetooth or Wi-Fi). Automotive navigation systems can include personal information management for meetings, which can be combined with a traffic and public transport information system.
The track was approximately 600-metre (1,969 ft) long (one-way) and featured only two stations. The six-month operation was intended to research the public acceptance of PRT-like systems. In 2010 a 10-vehicle (four seats each), two station 2getthere system was opened to connect a parking lot to the main area at Masdar City, UAE. The systems ...
Interactive maps, databases and real-time graphics from The Huffington Post
CAD systems may be interconnected with automatic vehicle location systems, mobile data terminals, office telephones, and selective calling and push-to-talk ID.. Computer-assisted dispatch systems use one or more servers located in a central dispatch office, which communicate with computer terminals in a communications center or with mobile data terminals installed in vehicles.
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