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A Class II standard fire alarm system shall be coded, closed circuit, presignal fire alarm system which shall be so installed and arranged that the initial operation of an alarm-sending station will sound, at least four times, the code of that alarm-sending station on the presignal alarm-sounding devices only. Presignal alarm-sounding devices shall be installed not to alert all the occupants of the building but to notify those in authority and certain occupants that a fire or emergency exists in the building. Such presignal alarm-sounding devices shall be located at the telephone switchboard, in the engine room, general offices and in such other places in the building where the members of the fire brigade, employees or attendants work or assemble. Every alarm-sending station of a Class II standard fire alarm system shall be equipped so that a coded, general alarm can be sounded by the use of keys, plugs or similar devices which shall, at all times, be available to persons with authority to sound a general alarm. In every building where a Class II standard fire alarm system is installed there shall be on duty at all times two adults charged with the responsibility of sounding a general alarm.
(Prior code § 91-106)