![]() If these alarms activate, the fire alarm control unit (FACU) would receive a non-latching supervisory alarm without the activation of any occupant notification appliances. In these cases, the addressable monitor module is in lace to supervise the in room smoke alarms. This has been done for quite some time in Group R-2 occupancies used for university dorms or specific design criteria such a Marriott's Module 14. To accomplish this an addressable monitor module could be connected to a contact on the residential unit smoke alarms. ![]() This new 2021 code section 907.5.2.1.3.2 is requiring the single and multiple smoke alarms to sound these low frequency appliances. ![]() However, with a standard design in mind, these appliances will only activate via a general alarm signal. These should already be captured by your minimum code design. If this option is selected, you can utilize the wall or ceiling mounted 520 Hz low frequency notification appliances required by the 2021 IFC section 907.5.2.1.3.1 for occupant notification in group R-1 and and Group R-2 occupancies.
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