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Kidde COPDLG Explosive Gas and Carbon Monoxide Alarm — Plug-In
$64.97
Final price set by Amazon · may vary
The Kidde COPDLG is a plug-in combination alarm that detects natural gas, propane, and carbon monoxide in a single unit — covering the three primary combustion gas hazards found in homes with gas appliances, gas wate...
Key Features
- 3-in-1 detection: natural gas, propane, and carbon monoxide
- Low-level CO alerts for vulnerable household members
- Backlit digital display
- 85 dB alarm with flashing light alert
- Extendable cord for flexible placement
- AA battery backup for power outages
- No low battery chirps at night
- 10-year limited warranty
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The Kidde COPDLG is a plug-in combination alarm that detects natural gas, propane, and carbon monoxide in a single unit — covering the three primary combustion gas hazards found in homes with gas appliances, gas water heaters, and attached garages. It is the appropriate selection for kitchens, utility rooms, and areas adjacent to gas infrastructure where a single detector must address multiple combustible and toxic gas threats.
Construction and Design
The COPDLG plugs into a standard 120V outlet, with an extendable cord allowing positioning closer to the floor — where natural gas and propane accumulate due to their density relative to air. The cord extension is an important functional feature: combustible gas sensors require proper placement relative to the gas source and floor level. AA backup batteries maintain CO detection during power outages, with automatic switchover. The digital display activates by button press.
Detection Performance
The COPDLG detects natural gas (methane), propane, and CO — sometimes described as "3X detection." CO detection meets UL 2034 thresholds and includes low-level alert notifications for sub-threshold concentrations. Natural gas and propane detection follows applicable standards for combustible gas alarms. The 85 dB alarm and flashing light engage for any detected hazard. Users should position the unit per the manufacturer's installation guide, as optimal placement height differs between CO (mid-wall) and explosive gas (near floor) detection.
Strengths
- Single unit covers natural gas, propane, and CO — three hazards, one device
- Low-level CO alerts for sensitive household members
- Extendable cord enables positioning closer to floor for combustible gas detection
- Digital display for CO concentration readout
- AA battery backup maintains CO monitoring during power outages
Limitations
- Optimal placement height is a compromise between CO (mid-wall) and explosive gas (floor-level) sensing — single-location placement cannot optimize both simultaneously
- No Wi-Fi connectivity; gas detection events are local-only — the COPDLQW adds app connectivity for CO but not explosive gas
- Extendable cord, while functional, limits placement to outlet-proximate locations
Recommended Applications
The COPDLG is best suited for kitchens, utility rooms with gas appliances, laundry rooms with gas dryers, and the base of stairwells in homes with gas infrastructure on lower floors. It is a practical single-unit solution for homes with natural gas or propane service that want comprehensive gas hazard coverage without installing separate CO and combustible gas alarms.
Verdict
The Kidde COPDLG provides the broadest hazard coverage of any standard Kidde plug-in alarm — natural gas, propane, and CO detection with low-level CO alerts in one unit. For households with gas appliances or propane service, it is the functionally strongest plug-in model in the Kidde CO lineup. Households requiring remote alerts for CO events should evaluate the COPDLQW for connected monitoring.
Brand / Vendor
Kidde
Model / SKU
COPDLG
Product Type
Carbon Monoxide Alarm
Price
$64.97 (Amazon)
Rating
4.8 / 5 — reviews
Availability
✓ In Stock on Amazon
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Verified Buyer Reviews
Customer Reviews
★★★★★4.6 / 5· 511 ratings on Amazon
★★★★★
Peace of mind with a plug
This is one of those household items you hope you never actually hear, but you're glad is there. The setup is incredibly straightforward since it just plugs into a standard outlet, and the included extension cord gives you plenty of flexibility on where to actually mount the sensor.The digital display is a nice touch, giving you a clear reading rather than just a flashing light. It also has a battery backup, so it doesn't quit on you if the power goes out. It’s a small price to pay for a unit that covers both CO and explosive gas leaks in one footprint.- Extremely easy to install and move if needed.- Long extension cord allows for ideal placement away from the outlet.- Digital display provides clear, real-time levels.- Battery backup keeps it running during power failures.Verdict: 5/5. Simple, effective, and flexible. It’s a must-have for any home with gas appliances.
Verified Purchaser · April 21, · ✓ Amazon Verified Purchase
★★★★★
I would buy again!
Excellent detectors, great value for the peace of mind. I love that it gives a value on the display to actually know your home levels. Back up, battery.
Verified Purchaser · June 7, 20 · ✓ Amazon Verified Purchase
★★★★★
Peace of Mind and Easy to Use
This Kidde carbon monoxide detector is a must-have for home safety. I love that it detects carbon monoxide as well as propane and natural gas it makes me feel much more secure knowing multiple threats are covered with one device. Setup was quick and straightforward, and the unit works exactly as expected.It’s well made, reliable, and gives me real peace of mind for my home and family. I highly recommend this detector to anyone looking for dependable, all-in-one protection.
Verified Purchaser · January 3, · ✓ Amazon Verified Purchase
★★★★★
Good quality and easy to use
We bought this because we had an odd smell in our bathroom and wanted to be sure it wasn’t any type of gas. This device is nice because it detects several different types of gases and is easy to plug in. The only hard part I had a difficult time with was trying to open the battery compartment but once you get that open everything you need (including the battery) is there and easy to plug in and then you’re all set. Id buy again.
Verified Purchaser · June 10, 2 · ✓ Amazon Verified Purchase
★★★★☆
Does the job
We’ve had this brand for a few years. Once the sensor dies, it will flash “end” for end of life. It picks up gas well. We tested it with propane. Alarm is quite loud. Standard size. Back up battery
Verified Purchaser · February 9 · ✓ Amazon Verified Purchase
★★★★★
For Peace of Mind/Safety
I've had this exact same alarm for over 2 years. We heat mostly with propane. It gives me peace of mind, it easily fits into a low outlet in our living room. The only time it has gone off thankfully is when the 9 volt battery got low and it let us know as alarms do that it needed to be replaced. When we tested it, the alarm is loud just like you'd want it to be. The battery lasted a long time. I recently bought this new one for my granddaughter who has small children because she worried about gas leakage. Now she also has peace of mind. With small children it's best not to place it at a low outlet so it's in the kitchen at an upper outlet. So worth the cost which is reasonable for what it does.
Verified Purchaser · April 25, · ✓ Amazon Verified Purchase
★★★★★
Saved our lives!!
Saved our lives! We had a CO scare in our basement after running our generator and if not for this alarm, we surely would have met a different fate. I recommended having one or two on every floor of your house if possible! Accurate readings that matched what the fire department used when they came to our home as well and very user friendly. Don’t delay buy it today! Could be the difference between life and death.
Verified Purchaser · June 9, 20 · ✓ Amazon Verified Purchase
★★★★★
Every home owner absolutely MUST have one of this in their home to protect the ones you love!
Long story. The gas company notified me of a leak on my property. The pinpointed it to be underneath my house! I about fainted! I could not smell gas, the technician could not smell gas. I asked him what could I do in the event this should ever happen again. He said "Get a leak detector". I had no idea such a device existed! I ordered this on minutes after he said that and I had it installed by the next afternoon. I highly recommend on for every homeowner who has natural gas or propane service! Installation was a breeze.
Verified Purchaser · May 25, 20 · ✓ Amazon Verified Purchase
★★★★★
Quality and safety assurance
Kidde manufactures quality products that can be trusted for your safety and wellbeing. It’s a go to product that I have relied on for years and have felt very comfortable with. Would definitely recommend, reliable and affordable.
Verified Purchaser · June 21, 2 · ✓ Amazon Verified Purchase
Showing 9 of 511 Amazon reviews.
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