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What is a closed protocol fire alarm?

A fire alarm uses technology similar to computers to communicate with the various devices that form the alarm, the language used is called the protocol, there are a number of protocols and the most common are Apollo and Hochiki these are true open protocols and allow fire alarm system designers to select the appropriate fire control panel for the site. Open Protocols allow you to choose the service company as any qualified engineer can do a manufacturers course to work on the system. Closed protocol systems are kept within the manufacturers own engineers, these systems can be offered at a significant price reduction on initial quote as they can only be worked on by the manufacturer so the maintenance can be more expensive and replacement parts tend to be at a higher cost than those of the open protocol manufacturers.

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