2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017

11B-407.4.8.2 Audible indicators.

Audible indicators shall comply with Section 11B-407.4.8.2.

11B-407.4.8.2.1 Signal type.

The signal shall be an automatic verbal annunciator which announces the floor at which the car is about to stop.

Exception: For elevators that have a rated speed of 200 feet per minute (1 m/s) or less, a non-verbal audible signal with a frequency of 1500 Hz maximum which sounds as the car passes or is about to stop at a floor served by the elevator shall be permitted.

11B-407.4.8.2.2 Signal level.

The verbal annunciator shall be 10 dB minimum above ambient, but shall not exceed 80 dB, measured at the annunciator.

11B-407.4.8.2.3 Frequency.

The verbal annunciator shall have a frequency of 300 Hz minimum to 3000 Hz maximum.