2010 ADA Standards for Accessible Design Pocket Guide
809.5 Residential Dwelling Units with Communication Features.
Residential dwelling units required to provide communication features shall comply with 809.5.
Where a building fire alarm system is provided, the system wiring shall be extended to a point within the residential dwelling unit in the vicinity of the residential dwelling unit smoke detection system.
Where alarm appliances are provided within a residential dwelling unit as part of the building fire alarm system, they shall comply with 702.
All visible alarm appliances provided within the residential dwelling unit for building fire alarm notification shall be activated upon activation of the building fire alarm in the portion of the building containing the residential dwelling unit.
Residential dwelling unit smoke detection systems shall comply with NFPA 72 (1999 or 2002 edition) (incorporated by reference, see “Referenced Standards” in Chapter 1).
All visible alarm appliances provided within the residential dwelling unit for smoke detection notification shall be activated upon smoke detection.
The same visible alarm appliances shall be permitted to provide notification of residential dwelling unit smoke detection and building fire alarm activation.
Visible alarm appliances used to indicate residential dwelling unit smoke detection or building fire alarm activation shall not be used for any other purpose within the residential dwelling unit.
Communication features shall be provided at the residential dwelling unit primary entrance complying with 809.5.5.
A hard-wired electric doorbell shall be provided. A button or switch shall be provided outside the residential dwelling unit primary entrance. Activation of the button or switch shall initiate an audible tone and visible signal within the residential dwelling unit. Where visible doorbell signals are located in sleeping areas, they shall have controls to deactivate the signal.
A means for visually identifying a visitor without opening the residential dwelling unit entry door shall be provided and shall allow for a minimum 180 degree range of view.