SMI100RV Smoke Detector 9V Battery PoweredAn ideal pocket-sized reference book for comprehending maritime flags. This guide is both comprehensive and concise, encompassing: Early detection of smoke and fire emissions to avert personal injury with the SMI100RV Boat and RV Approved Battery-Operated Smoke Alarm, which is sanctioned for use in boats and recreational vehicles, adhering to the latest industry standards. The detector has a hinged cover for effortless battery replacements, while the tamper-resistant locking pin prevents premature battery removal.Features:Detect Smoke and Fire Emissions Early to Prevent Personal Injury With Model SMI100RVCompact Design: 5.58" Diameter x 1.99" HeightFast & Easy Installation9V Battery Powered, No Wiring RequiredLow Battery IndicatorSilence FeatureTest Button Easily Accessible on the Cover of the AlarmAlarm Horn: 85 dB @ 10 ftSmoke Sensor: IonizationListed to UL217 for RV Use Eighth EditionComplies with U.S. Coast Guard Sect. 28.325(b)Package Contents: Smoke Alarm 9-Volt Battery