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A telecommunication exchange is a central system of switches and other equipment used to connect phone calls. One of the most basic functions of a telephone is its use in the public switched telephone network which provides connections internationally. Therefore, most telecommunication exchanges have the ability to provide a connection for a range of different networks such as cables, telephone lines and satellites.

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Many commercial or industrial buildings have designated areas used to house flammable substances. These areas are known as hazardous areas and are usually well labelled to make clear that the room contains dangerous substances.

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As wireless fire detection has previously only been available as a complete, system based fire detection solution, it meant that it could only be used for new or retrofit systems. Even then, wireless detection was not without its faults, and was not suitable for some applications.

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