Safe-T-Alert FX-4 Carbon Monoxide Alarm

The Safe-T-Alert FX-4 Carbon Monoxide Alarm is a low-voltage, hard-wired CO detection system designed specifically for marine vessels. Built to replace aging CO alarms and meet ANSI/UL Standard 2034 marine requirements, this alarm conforms to ABYC A-24 standards and carries NMMA Listed Component certification—critical compliance markers for any vessel requiring current CO safety equipment.

The FX-4 operates on your boat's DC electrical system or marine-grade batteries, making it compatible with standard marine power configurations without requiring shore power or external adapters. With a full 5-year service life, this unit outlasts competing models such as the CO Sentinel CMD-4M and CMD-3M, reducing replacement frequency and long-term ownership costs. The hard-wired design integrates directly into existing boat electrical infrastructure, eliminating the need for battery-powered units that require monitoring and periodic replacement.

This alarm is essential for weekend fishermen, cruisers, and serious offshore anglers who spend extended time in enclosed cabin spaces where generator exhaust or engine combustion byproducts accumulate. Carbon monoxide is odorless and colorless—early detection through a certified alarm is the only reliable way to prevent CO poisoning aboard your vessel. The FX-4 detects dangerous carbon monoxide levels before symptoms appear, protecting crew during extended trips, overnight anchoring, or rough weather when cabin doors and hatches remain closed.

Marine CO alarms differ from household models due to the unique challenges of saltwater environments—corrosion resistance and DC power compatibility are non-negotiable. The FX-4's marine-grade construction and hard-wired reliability make it a proper replacement for original equipment alarms that have exceeded their service lifespan, ensuring your vessel remains compliant with ABYC standards and equipped with current-generation detection technology.