Fire Alarms Explained: High Rise Building Evacuation!

Описание: The system in her dorm is a Simplex 4100. Not a U, not an ES, just a 4100. Speakers are Wheelock E70 in units, or E70-24MCW-FR Speaker/Strobes in the halls. System is setup to do two-stage for the pull stations. Stage one reads out a pull station code, stage 2 is activated only if security inserts their key for the pull station. 2 Stage is rare in the US so it's a fairly unique system. Seldom does it actually go off into alarm.

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