Xintex Smoke & Fire Alarm - Low Battery Alarm Features Audible Beeps

Smoke & fire alarm general purpose smoke and fire alarm for boats and rv's meets the requirement of nfpa 302 stating that "all vessels 26 feet or more in length with accommodation spaces intended for sleeping shall be equipped with a single station smoke alarm that is listed to ul217 for recreational vehicles." dimensions: 4.25'' diameter, 1.75'' height alarm 85db listing: ul 217 for rv's complies with u.S. Coast guard section 28.325(b) and section 181.450 inclusive uses the ionization principle of detection for detecting fast-flaming fires which consume combustible materials rapidly and spread quickly 9v battery operated (battery included); no wiring required for easy installation low battery alarm features audible beeps to indicate a battery replacement is required incorporates 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 alarm recommended installation is to install one unit in each sleeping accommodation, salon, galley, engine/generator room, and electrical control room suitable for marine and recreational vehicle use. Fume type = none. Voltage - input range (volts) = none. Blower relay = none. Sensors included = none. Generator shutdown = none. Vehicles & parts - watercraft parts & accessories. Automotive/rv-fume detectors,marine safety-fume detectors. Xintex smoke & fire alarm. Ss-770