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The additional break glass unit is an essential component of a smoke ventilation system, designed to provide an additional point of access for opening windows in the event of an emergency. When integrated with a KFC control panel and smoke sensor, it allows for quick and safe evacuation of a building by automatically opening windows to provide a clear escape route. The smoke sensor detects the presence of smoke and sends a signal to the control panel, which in turn activates the break glass unit and opens the windows. The system provides added safety and peace of mind for building occupants and owners alike.