45-Series Combo Carbon Monoxide Propane Alarm Surface Mount – 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 – Detects both gas leaks and CO gas simultaneouslyReliable – 12V power means no missing or dead batteries to replaceDurable – Built for the extreme RV environmentApproved – Meets RVIA\/NFPA requirementsEnd of Life Signal