46 CFR § 35.40-7
Carbon dioxide and clean agent alarms—T/ALL
April 15, 2021
Each carbon dioxide or clean agent fire extinguishing alarm installed after November 19, 1952, must be conspicuously marked: “WHEN ALARM SOUNDS VACATE AT ONCE. [CARBON DIOXIDE/CLEAN AGENT—as appropriate] BEING RELEASED.”
[USCG-2006-24797, 77 FR 33874, June 7, 2012]