MTI | Safe T-Alert | 62 Series Carbon Monoxide Alarm | 62-542-WT-Marine | Hard-Wired | Flush Mount | Marine Use | 12V DC | White

Marine Carbon Monoxide (CO) Alarm

Reliable Protection in Extreme Marine Environments 

Protect your passengers and vessel with a marine-rated carbon monoxide alarm designed specifically for the harsh conditions of life on the water. Built to perform in extreme temperatures and eliminate false alarms, this unit delivers dependable safety when you need it most.

Key Features

NMMA Listed Component

Certified for marine use and built to meet industry standards.

Extreme Temperature Performance

Operational from -40°F to 158°F — the only marine CO alarm rated for this full temperature range. The high-quality sensor maintains accuracy in both excessive heat and freezing conditions.

No False Alarms

Engineered to ignore new boat smell, outgassing, and non-hazardous hydrocarbon gases commonly present while boating.

Low Current Draw (37 mA)

Innovative micro-current circuitry helps conserve battery power.

Alarm Mute with Auto Reset

Temporarily silence the alarm while ventilating the cabin. The unit automatically reactivates if unsafe CO levels remain.

Memory Scan

Stores the CO concentration that triggered the alarm — allowing you to review the highest detected level after ventilation.

Rapid Recovery Sensor

Quickly resets when silenced or reactivates if dangerous CO levels persist.

End-of-Life Signal

Provides a clear alert when replacement is required after 5 years of service.

Optional Interconnect & Generator Shutdown

Available configurations allow integration with additional alarms and automatic generator shutoff systems.

Technical Specifications

• Certification: Conforms to ANSI / UL 2034

• Testing Laboratory: ETL / Intertek

• Alarm Set Point: 400 PPM (4–15 minutes)

• Power Supply: 13.8 VDC (±15%)

• Current Draw: 37 mA @ 13.8 VDC

• Low Voltage Warning: 7 Volts

• Operating Temperature: -40°F to +158°F

• Dimensions: 4.5″ W x 3.25″ H x 1.25″ D

Built for Boaters Who Demand Reliability

From extreme climates to everyday cruising, this marine CO alarm delivers dependable, low-maintenance protection without nuisance alarms.

Need help confirming fitment?

Our team at United RV Parts is here to help you find the right replacement or repair parts for your RV repair needs.

Text or call 817-984-1852 with the make and model number of your existing CO / LP detector and we’ll make sure you get exactly what you need the 1st time.