MTI INDUSTRIES CARBON MONOXIDE ALARM WHI SA-339-WT

Coleman-Mach SA339WT Sealed Battery Carbon Monoxide Alarm, White, Round Battery Operated RV Carbon Monoxide (CO) Alarms Sealed-In Lithium Battery - No Replacement Needed Conforms to ANSI/UL STD 2034 Full Five Year Service Life Built-In Test / Hush Functions Always On - No Missing Batteries Meets RVIA/NFPA Requirements Color White Size 5-1/4" Dia.