alarm notification system can be designed. Possible consequences of inappropriately designed signaling systems include under-sizing, over-sizing, safety to personnel, cost overruns, system non-acceptance, [...] certainty. Effective coverage – guaranteed. Every aspect of the alarm system design process is susceptible to errors. Incomplete system requirements, inattention to environmental factors, insufficient product [...] needed to deploy adequate signaling to ensure that warning signals are perceived. With fire alarm systems, performance requirements for signaling devices have been formulated. To ensure adequate alarm perception