Don't worry, the battery will have already been long dead. 99% of the time it's the visual indication that there is an alarm that prevents people from touching stuff they shouldn't be touching. Or simply put the kit behind glass, which needs to be broken to access it.Yeah that one is basically a smoke detector design... battery powered alarm . Tho I'd wager they'd not want the audible alarm version
Break Glass Stopper® Page - STI AMERICAS
Protects emergency keys and documents, while keeping them accessible in the event of an emergency
www.sti-usa.com