2013 California Standards for Accessible Design Pocket Guide
11B-809.5.5 Residential dwelling unit primary entrance.
Communication features shall be provided at the residential dwelling unit primary entrance complying with Section 11B-809.5.5.
11B-809.5.5.1 Notification.
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.
11B-809.5.5.2 Identification.
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.
[2010 ADAS] Advisory 809.5.5.2 Identification. In doors, peepholes that include prisms clarify the image and should offer a wide-angle view of the hallway or exterior for both standing persons and wheelchair users. Such peepholes can be placed at a standard height and permit a view from several feet from the door.
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