FIRST ALERT Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN
First Alert

FIRST ALERT Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display, GCO1CN

$50.45$88.99★ 4.4(996 reviews)
Mubboo Score 4.8/10
  • N/A.
  • Imported
  • Versatile CO alarm senses high levels of propane, natural/methane gas, and carbon monoxide
  • Crisp backlit digital display allows you to view current and peak levels
  • Can be remotely muted using almost any household remote control
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Mubboo Value Score: 4.8/10

Quality8.8/10
based on 4.4/5 customer rating
Popularity0.3/10
996 reviews, top 38% in Carbon Monoxide Detectors
Value5.3/10
priced below 53% of Carbon Monoxide Detectors

How it stacks up

Rated 4.4/5 — better than 28% of 53 Carbon Monoxide Detectors we track. Mid-tier pricing at $50.45.

Head-to-Head vs Category Leader

First AlertKidde (Leader)
Price$50.45$79.97
Rating4.4/55.0/5
Reviews99617
Mubboo Score4.8/104.0/10

The First Alert Combination Explosive Gas and Carbon Mon is 37% cheaper but rated lower (4.4 vs 5).

Quick Specs

Alarm
Horn
Color
Gray/White
Style
Digital
Material
Polystyrene
Unit Count
1.0 Count
Sensor Type
Electrochemical
Manufacturer
First Alert
Model Number
GCO1

What reviewers say

Synthesized from 40 reviews · 100% verified purchases.

Choose a model with a digital display if you want to see real-time CO levels. Note that the low-battery chirp can be mistaken for a smoke detector, so test early; also remember these need replacement after 10 years.

Rating reliability

Moderately reviewed — reasonably reliable
🟢 Sold & shipped by Amazon

About First Alert

  • 100 products in our database
  • Average rating: 4.6/5 across all products
  • Price range: $13.98 – $648
  • Categories: Carbon Monoxide Detectors, Fire Extinguishers, Smoke Detectors

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Frequently Asked Questions

Is the First Alert FIRST ALERT Combination Explosive Gas and Carbon Monoxide worth buying in 2026?

It earns a Mubboo Score of 4.8/10, with a 4.4/5 rating from 996 reviews — better than 28% of Carbon Monoxide Detectors we track.

How much does the First Alert FIRST ALERT Combination Explosive Gas an cost?

It is currently $50.45 — mid-tier pricing for Carbon Monoxide Detectors.

How does it compare to the top-rated Carbon Monoxide Detectors?

The First Alert Combination Explosive Gas and Carbon Mon is 37% cheaper but rated lower (4.4 vs 5).

Sources & References

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