Safe-T Alert 12VDC Hard Wired Carbon Monoxide Alarm - Surface MountEnsure the safety of your crew and passengers with the FX-4 Marine Surface Mount Carbon Monoxide Alarm. Designed for marine environments, this low-voltage, hard-wired alarm offers dependable protection against the silent threat of carbon monoxide (CO). Whether you're replacing outdated units like the Fireboy-Xintex CMD-3M or CMD-4M, or upgrading your vessel's safety system, the FX-4 provides peace of mind on the water.Feature Hard-Wired Low Voltage Operation: Powered directly by your boat's DC electrical system or marine-grade batteries, eliminating the need for battery replacements.; UL 2034 Marine Certified: Conforms to ANSI/UL STD 2034 for marine applications, ensuring compliance with safety standards.; Advanced Sensing Technology: Utilizes proven sensing technology to minimize false alarms, enhancing reliability.; Mute Functionality: Features an alarm mute button that silences the alarm during ventilation, with a rapid recovery sensor that resets or reactivates the alarm if CO levels remain hazardous.; Audible Alert: Emits an 85 dB alarm to alert occupants to dangerous CO levels.; Compact Design: Measures 2.5a ^2W x 3.5a ^2H x 1.25a ^2D, suitable for surface mounting in various locations.; Replaces Older Models: Serves as a direct replacement for Fireboy-Xintex CMD-4M and CMD-3M units.;