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Combo Carbon Monoxide Propane Alarm - Surface Mount - Mini - BlackHave a safe TRIP!Test and inspect the Propane and CO alarms installed in your RV every week and replace malfunctioning alarms.Replace all Propane and CO alarms that are 5 years old or older.Install alarms listed for RV use.Prevent accidents by teaching family and friends about the operation of the alarms. Never ignore a sounding alarm.Features:Double-Duty Alarm. Upgrades single 12 Volt Propane Gas alarms to a dual alarm that detects both Propane Gas and COSpace Saving. Compact design for RV'sDesigned for the Rugged RV Environment. Ideal for Class A Motor homes, Class B Van Campers, Class C Mini-Motor Homes, Travel Trailers, Fifth Wheels, Truck & Folding CampersAdvanced Technology. Alarm Mute button silences alarm while RV is ventilated. Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of Propane or CO remainReliable. 12 Volt power means no missing or dead batteries to replaceApproved. Meets RVIA/NFPA requirementsListed to UL 1484 RV and UL 2034 RV