[Code of Federal Regulations] [Title 46, Volume 7] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR181.450] [Page 267] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 181_FIRE PROTECTION EQUIPMENT--Table of Contents Subpart D_Fixed Fire Extinguishing and Detecting Systems Sec. 181.450 Independent modular smoke detecting units. (a) An independent modular smoke detecting unit must: (1) Meet UL Standard 217 and be listed as a ``Single Station Smoke detector--Also suitable for use in Recreational Vehicles,'' or other standard specified by the Commandant; (2) Contain an independent power source; and (3) Alarm on low power. (b) [Reserved]