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The process of detecting a building fire is carried out by ionisation-type smoke detectors / sensors which are continuously monitoring the flow of ions (current) between two electrically charged plates. If the ion flow between the plates is sufficiently disrupted by smoke, alarms are sounded across the building to alert occupants. If the activated alarms are not turned off within the period of time programmed in system configuration, a message is sent via a fast and reliable fibre optic internet connection to the local fire department’s Emergency Management System (EMS).
Explain relationship between sensors, processor(s) and output transducers in this scenario.
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Provide appropriate labels to replace X, Y & Z in order to complete the system flowchart above for the scenario described.

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