# Safe-T-Alert FX-4 Carbon Monoxide Alarm - 2-Pack [FX-4MARINE2-PACK]

**FX-4 Carbon Monoxide Alarm - 2-Pack**

Marine Use - Low Voltage Hard Wired Alarm. Replaces your CO alarms that are over 5 years old. No Bags. No Tags. Full 5-Year service life, longer than CO Sentinel CMD-4M alarms. CMD-4M and CMD-3M that have reached end of life. 

**Features:**

-   Conforms To ANSI / UL STD 2034 - Marine
-   Meets ABYC A-24. NMMA Listed Component
-   Most Reliable
-   Boats DC electrical system or marine grade batteries supply power to the alarm
-   No missing or dead batteries to replace
-   Proven Sensing Technology
-   Prevents nuisance alarms which could lead to confusion and disconnected detectors
-   Advanced Technology
-   Alarm Mute button with advanced technology that silences alarm while boat is ventilated
-   Rapid recovery sensor resets when silenced or reactivates alarm if dangerous levels of CO remain
-   Loud. 85 dB alarm alerts you to CO danger
-   Case Size: 2.5”W x 3.5”H x 1.25”D

**Specifications:**

-   Fume Type: Carbon Monoxide
-   Voltage - Input Range (Volts): 12v
-   Generator Shutdown: No
-   Box Dimensions: 2"H x 8"W x 10"L WT: 1.2 lbs

## Details

- **Price:** 179.99 USD
- **Type:** Fume Detectors
- **Tags:** 1st Class Eligible, Brand_Safe-T-Alert, Marine Safety, Marine Safety | Fume Detectors

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 179.99 USD | In stock |

## Images

- Safe-T-Alert FX-4 Carbon Monoxide Alarm - 2-Pack [FX-4MARINE2-PACK] Safe-T-Alert

---

> Source: [Besafe1st](https://besafe1st.com/products/safe-t-alert-fx-4-carbon-monoxide-alarm-2-pack-fx-4marine2-pack)
> Updated: 2026-06-05