California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 6 - Elevator Safety Orders
Group II - Elevator Installations for Which the Installation Contract Was Signed Before October 25, 1998
Article 12.3 - Special Purpose Personnel Elevators
Section 3085.22 - Emergency Signal and/or Communication. [Rule 1502.12]

Each elevator shall be equipped with an alarm button or switch in the car operating station and an alarm device mounted in a location which shall be readily available to a person who is normally situated in the vicinity when the elevator is in use, or a means of voice communication with a receiving station which is always attended when the installation is in use. If the alarm device or means of voice communication is normally activated by utility power supply, it shall be backed up by a manual or battery operated device.

(Title 24, Part 7, Section 7-3085.22)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.