Smoke & Fire AlarmGeneral purpose smoke and fire alarm for boats and RV sMeets the requirement of NFPA 302 stating that ""All vessels 26 feet or more in length with accomodation spaces intended for sleeping shall be equipped with a single station smoke alarm that is listed to UL217 for recreational vehicles, , , ""Complies with U, S, Coast Guard Section 28, 325(b) and Section 181, 450 inclusiveUses the ionization principle of detection for detecting fast-flaming fires which consume combustible materials rapidly and spread quickly9v battery operated (battery included); no wiring required for easy installationLow battery alarm features audible beeps to indicate a battery replacement is requiredIncorporates an internationally recognized horn signal for evacuation, During the alarm mode the horn produces three short beeps followed by a two second pause and then repeats, Features a test button that is easily accessible on the cover of the alarmRecommended installation is to intall one unit in each sleeping accomodation salon galley engine/generator room and electrical control roomSuitable for marine and recreational vehicle useProduct : XINTEX SMOKE & FIRE ALARM FOR BOATS AND RV S WITH 9V BAT Manufacturer : XINTEX / FIREBOY Manufacturer Part No : SS-770 UPC : 042741017701 SKU: CW29564