CMD6-MBR-R CO Alarm Lithium-Metal Battery, 7-Year Life, Interconnect & Internal Relay, WhiteThe Fireboy-Xintex CMD6-MBR-R Carbon Monoxide (CO) Alarm provides advanced protection for boats and RVs. Featuring a state-of-the-art electrochemical sensor, it delivers immediate and stable CO detection, reducing false alarms even around common cleaning solvents.This sleek white alarm operates with a permanent lithium-metal battery, requiring no wiring for maintenance-free, reliable protection. Multiple CMD6 alarms can be interconnected to sound together, and an internal relay module is available for generator shutdown or external signaling.Key Features: Electrochemical sensor for fast, stable CO detection; Long sensor life Approx. 7-year end-of-life (EOL); Compact white design blends with interior dA cor; Maintenance-free lithium-metal battery, requires no external power; Internal relay module available for generator shutdown or external signal; Interconnectable all connected CMD6-MxR alarms sound together; Optional RCM5 relay control module compatibility; Microprocessor controlled with conformal coated circuit board; Time-weighted average CO measurement constantly monitors CO levels; Highly resistant to most chemicals, solvents, and cleaners; Specifications: Model Number: CMD6-MBR-R; End-of-Life (EOL): Approx. 7 years; Power Usage: None operates entirely on lithium-metal battery; Alarm Point: 10% COHb; Alarm Horn: 85 dBA; Dimensions (L x W x H): 3.5 in x 3.5 in x 1.21 in (89 mm x 89 mm x 31 mm); Warranty: 1-year limited warranty (material & workmanship);