🏠 Stay safe, stay savvy—because your home deserves the smartest alert system.
The FIRST ALERT GCO1CN is a plug-in combination alarm that detects carbon monoxide and explosive gases like propane and methane. Featuring a crisp backlit digital display, remote mute capability, and an 85-decibel alarm, it ensures reliable, real-time monitoring. Powered by 120V with battery backup, it uses an electrochemical sensor for precise detection, offering triple-layered protection and peace of mind for your home.
| Brand | First Alert |
| Style | Digital |
| Power Source | Corded Electric |
| Color | Gray/White |
| Alarm | Audible |
| Sensor Type | Electrochemical |
| Global Trade Identification Number | 00029054000255 |
| Number of Items | 1 |
| Manufacturer | First Alert |
| UPC | 163121513450 803982897794 807320292920 088021778207 014444627129 029054000255 762319853448 013405003330 132018522363 617407371949 012301812510 807032948627 111012330006 735479172308 801029668697 768674041001 782386071019 809188504931 765042447410 731215365195 172304286067 809387600366 |
| Part Number | GC01CN |
| Item Weight | 12 ounces |
| Product Dimensions | 7.25 x 4.25 x 9.06 inches |
| Country of Origin | China |
| Item model number | GCO1CN |
| Batteries | 2 AA batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | Pack of 1 |
| Voltage | 120 Volts |
| Item Package Quantity | 1 |
| Sound Level | 85 dB |
| Included Components | Electrical & Heating;Security and Intrusion Monitoring;combination-smoke-carbon-monoxide-detectors |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Warranty Description | Limited Ten Years |
H**N
Check Expiration Date upon receipt.
Good tester, but verify the Expiration Date upon receipt. Some sellers provide NOS testers that are near their end, even though apparently new.
S**H
Must have this Gas leak detector
I've had this Brand for years. Tested them and they work great.
R**.
Sensitive Monitor that Lasted five years
This is a good work horse of a carbon monoxide detector. It lasted five years and told us every time someone in the kitchen had accidentally bumped it to the gas stove and turned the gas on. It has a battery and requires an AC electrical outlet, highly recommended.
T**D
Opened and battery missing
The packaging states that a 9 V battery is included. The packaging (clear plastic bubble) was cut open just slightly where the battery would’ve been and the battery was missing. Otherwise, the product works as intended. I use this in conjunction with another device for comparison. So at this time, my only issue was that the product was received without the included battery.
E**S
just always have used this model - it expires after 10 years - this is my third replacement
These detectors seem to work well. I've just never had a problem with this model unit. Previous units of this type have alerted when gas (propane in my case) was present. Can't attest to CO2, but I feel they likely will detect other gases as the manufacturer states. They've simply been detectors I've relied on and have never had a problem with First Alert GC series detectors. I have them in several locations and again, depend on these units...
I**S
The alarm I most trust
We have the alarm in our basement; I trust First Alert.
C**2
Fails to detect natural gas!
Bought two of these units. Trusted the name: First Alert. Did not want to buy an off brand with a safety product.That said, with the burner of my stove in the kitchen on low, I blew the flame out and let the gas continue to flow, turning it to high. The first alert gas detector unit was installed about 5 feet away from the stove near the ceiling.Natural gas rises because it's lighter than air, so you want to install your detector up above the source of gas. I stood there with the gas leaking close to five minutes... at this point I'm nearly choking on the smell of gas and I'm sure if I lit a match, the entire kitchen would've blown up.I'm not sure how much of a gas leak you'd have to have for this thing to go off, but I wasn't about to let myself blow up to find out!For most smoke detectors, all you have to do is light a match near it and they go off... every time we cook we have to pull the battery on the smoke detector... it's a Kidd by the way, and it works very well.I did test the 2nd unit, holding it directly over the flow of gas, and after about three or four minutes, it went off… seriously?!?I have to say I'm very disappointed in this first alert unit, and I really don't feel comfortable trusting my life to it.I'm going to buy a different brand and see how that goes… If it works better than this unit, then I'll write a follow up review.
S**E
Easy set up
Small convenient products.
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