I love these signs. Given how ungrammatical they are, I assume the verbiage is specified by California law:
The requirement for providing emergency procedures information to occupants is in California Health & Safety Code section 13220, and section 13221 authorizes the State Fire Marshal to issue implementing regulations.
These are in Title 19 of the California Code of Regulations, section 3.09. The specific requirement of interest is in subsection (a)(2)(B), which requires that the signs include "what the fire alarm, if required, sounds and looks like (audible and visual warning devices)."
The actual wording of the sign is not prescribed, but architects and building owners would prefer to avoid needless arguments with inspectors and thus often choose to closely track the language used in the regulation.
http://twitter.com/SFSirenstill my favorite
If you hear a sound like - - - WHOOP, WHOOPthat might be aGENERIC TECHNO EMERGENCY
Break glass, remove glowsticks.
I figured it was some Agency related to Tag Team....
Don't deny the pickle...