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Kidde COBDL Low-Level Carbon Monoxide Alarm, Portable AA with Digital Display
$42.97
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.5/5 WC Safety Review — the Kidde COBDL low-level carbon monoxide alarm Editorial assessment by the WC Safety Editorial Team, based on published Kidde specifications and category fit. We did not...
Key Features
- Low-level CO alerts for early detection below alarm threshold
- Backlit digital display shows CO concentration
- Alarms at dangerous CO levels for fast evacuation
- No low battery chirps at night
- Long-lasting AA batteries
- Flexible tabletop or wall-mount placement
- 10-year limited warranty
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EDITORIAL REVIEW: 4.5/5 WC Safety Review — the Kidde COBDL low-level carbon monoxide alarm
Editorial assessment by the WC Safety Editorial Team, based on published Kidde specifications and category fit. We did not laboratory-test this product.
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Kidde COBDL Low-Level Carbon Monoxide Alarm, Portable AA with Digital Display Overview
The Kidde COBDL low-level carbon monoxide alarm is a portable, AA-battery CO detector that alerts earlier than a standard alarm. It gives a low-level CO alert starting at 30 ppm, ahead of the standard 70 ppm alarm point, to help protect people who are more sensitive to carbon monoxide. It runs on two included AA batteries rather than a sealed 10-year battery, which makes it portable for travel or home, and it has a backlit LCD with peak-level memory.
As the Kidde COBDL, this low-level CO alarm gives earlier awareness. As a portable CO detector for travel it runs on AA batteries you can take anywhere, its 30 ppm CO alert warns sensitive people sooner, and as an AA battery carbon monoxide alarm it is simple to power and move.
This is a CO alarm only, not a smart, air-quality, gas, or smoke model, and it uses AA batteries rather than a sealed 10-year cell. Compare it against other carbon monoxide alarms and detectors, the sealed-battery Kidde COBD10, the wider Kidde CO alarms range, or a smart CO alarm if you want app alerts, before ordering.
What This Alarm Is Built For
| Use case | Fit | Buyer guidance |
|---|---|---|
| Protecting sensitive people | Purpose-built | Low-level alert at 30 ppm warns earlier than 70 ppm. |
| Travel and portable use | Strong | AA batteries make it easy to move or pack. |
| Seeing CO readings | Strong | Backlit display shows ppm and peak memory. |
| Hotels, cabins, RVs, rentals | Strong | Bring CO protection where none is installed. |
| Maintenance-free sealed battery | Verify first | For a sealed 10-year cell, choose the COBDL10. |
A carbon monoxide alarm is a life-safety device, so treat any CO alarm as an emergency: get to fresh air, call for help, and have the source fixed by a professional. This is a residential early-warning alarm; it is not built for occupational settings where carbon monoxide can climb to IDLH concentrations that demand industrial gas-detection instruments and rescue procedures, so use the right tool for each environment. Understand that the low-level alert at 30 ppm is an earlier warning rather than a reason to panic, keep fresh AA batteries in it, place it per the Kidde manual and local codes wherever you use it, and use the display and peak memory to understand readings rather than to delay evacuation during an alarm. Learn placement and CO risks in our CO detector placement guide and carbon monoxide exposure symptoms guide.
Pros & Cons
Pros
- Low-level CO alert starting at 30 ppm
- Portable AA battery power for travel
- Backlit LCD with peak-level memory
- Meets UL 2034 5th Edition plus NFPA standards
- 85-dB alarm with LED indicators
Cons
- AA batteries, not a sealed 10-year cell (see COBDL10)
- No WiFi, app, air quality, gas, or smoke features
- CO only, not a combination alarm
- Batteries need periodic replacement
How It Compares
The COBDL is Kidde's low-level, portable CO alarm. Weigh it against the alternatives before ordering:
| Option | Low-level alert | Battery | Best for |
|---|---|---|---|
| Kidde COBDL (this page) | Yes (30 ppm) | AA (portable) | Earlier alerts and travel |
| Kidde COBD10 | No (standard) | Sealed 10-year | Fixed home alarm with display |
| Kidde COBDL10 | Yes (30 ppm) | Sealed 10-year | Low-level, maintenance-free |
Choose the COBDL for low-level alerting you can carry, the COBD10 for a fixed sealed-battery alarm with a display, or the COBDL10 for low-level with a sealed 10-year cell. See our best carbon monoxide detectors guide, the best garage CO detector guide, and, for work settings, the best industrial CO monitor guide.
Specifications
| Brand | Kidde |
| Model | COBDL |
| Type | Portable low-level carbon monoxide alarm (CO only) |
| CO Alerts | Low-level at 30 ppm; standard alarm at 70 ppm; full UL 2034 response range |
| Power / Display | Two AA batteries (portable); backlit LCD with peak-level memory; LED indicators |
| Alarm / Listing | 85 dB; UL 2034 5th Edition, NFPA 72/101, FHA, HUD, CSFM; 10-year warranty |
Related Guides
best carbon monoxide detectors, CO detector placement guide, carbon monoxide exposure symptoms, best garage CO detector, best industrial CO monitor.
Related Resources
carbon monoxide alarms and detectors Kidde CO alarms CO detectors smart CO alarms
Frequently Asked Questions
What is the low-level CO alert on the COBDL?
The COBDL gives an earlier low-level alert starting at 30 ppm, ahead of the standard 70 ppm alarm point. That earlier awareness helps protect people who are more sensitive to carbon monoxide, such as children, older adults, and pets.
How is the COBDL powered?
It runs on two included AA batteries, not a sealed 10-year battery. That makes it portable, so you can take it traveling or move it between rooms. Replace the AA batteries as needed and follow the low-battery signal.
Is this the same as the sealed 10-year COBDL10?
No. The COBDL is the AA-battery, portable version, while the COBDL10 uses a sealed 10-year never-replace battery. Both offer low-level CO alerting; choose the COBDL for portability or the COBDL10 for a maintenance-free sealed battery.
What does the display show?
It has a backlit LCD that shows the current carbon monoxide level in ppm, plus a peak-level memory that displays the highest CO reading recorded since the last reset. That lets you see whether CO spiked while you were away.
Who benefits most from low-level alerting?
Earlier low-level alerts are especially useful for households with young children, elderly adults, pregnant women, or pets, who can be affected by carbon monoxide at lower concentrations than a standard alarm's threshold.
Can I take it traveling?
Yes. Because it is AA-battery powered and portable, it is designed for travel or home use, so you can bring CO protection to a hotel, cabin, RV, or rental. Confirm placement guidance wherever you use it.
Is it a smart or WiFi alarm?
No. The COBDL is a standalone alarm with a local horn, backlit display, and LED indicators. It does not connect to WiFi or a phone app. If you want app alerts, choose a smart CO alarm instead.
Does it detect gas, smoke, or monitor air quality?
No. It detects carbon monoxide only. It does not detect natural gas, propane, or smoke, and it does not monitor air quality. Choose a different model if you need any of those functions.
What standards does it meet?
Kidde lists the COBDL as meeting UL 2034 5th Edition along with NFPA 72, NFPA 101, FHA, HUD, and CSFM residential standards. Confirm the exact markings on the packaging for your application.
How loud is it?
It sounds an 85-decibel alarm when carbon monoxide reaches the alarm threshold, alongside the distinct low-level signal at 30 ppm. The backlit display and LED indicators add a visual reading and status.
How long does it last?
Kidde provides a 10-year limited warranty on the COBDL. Note the 10 years refers to the warranty, not a sealed battery, since this model uses replaceable AA batteries; replace the unit per its end-of-life guidance.
What should I do when it alarms?
Treat a CO alarm as an emergency: move everyone to fresh air immediately, call emergency services or your gas utility, and do not re-enter until it is cleared. Then have the CO source found and fixed by a qualified professional.
Written by Steven Eaton, WC Safety Editorial. Specifications sourced from Kidde published data. Compare the range in carbon monoxide alarms and detectors.
WC Safety is an independent PPE retailer and Amazon Associate; no paid placement. Match the alarm to your home and follow the manufacturer manual and local codes.
Brand / Vendor
Kidde
Model / SKU
COBDL
Product Type
Carbon Monoxide Alarm
Price
$42.97 (Amazon)
Rating
4.78 / 5 — 9 reviews
Availability
Check current availability on Amazon
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Verified Buyer Reviews
Customer Reviews
★★★★★4.9 / 5· 39 ratings on Amazon
★★★★★
High quality. Great company
The fifth edition with the low CO alert option is great. Product is use easy to use, easy to understand instructions and high-quality.
Verified Purchaser · June 11, 2 · ✓ Amazon Verified Purchase
★★★★★
Good value
Easy to read screen. Arteries easy to place/remove.
Verified Purchaser · June 11, 2 · ✓ Amazon Verified Purchase
★★★★★
Grwat
Much needed works well
Verified Purchaser · June 5, 20 · ✓ Amazon Verified Purchase
★★★★★
Perfect little monitor
Small and compact. Perfect for in the kitchen.
Verified Purchaser · May 29, 20 · ✓ Amazon Verified Purchase
★★★★☆
Bare Bones Unit, Giving it the Benefit of the Doubt
This is a good name brand detector, so I'm giving it the benefit of the doubt. The brand is known for being reliable, accurate, and safe. However you wouldn't really get that impression from some of the quirks of this specific model.Some greater clarity in the instructions would've made all the difference in the world. Some examples:* When you first energize it by pulling out a battery tab, it's not clear that you need to then do a test cycle upon the first power up.* One of the reasons it's not clear because it has a display that mainly just shows "Clr", and a green light that only flashes rarely I think it's just once a minute, rather than a steady green light. However, the written instructions on the detector say "Green-Operate Amber-Fault Red-Alarm - Exit to Fresh Air." with most detectors, you would expect the green light to be on but the fact that the green light only flashes very quickly about once a minute, coupled with the text it may imply that the meter is not functioning for some reason.* The instructions do not say anything about what appears to be a light sensor on the front of the unit. It says that some units have a light sensor that will change the way it senses CO and alarms at night. Presumably this is because we are more vulnerable when we are asleep. However, my household has a day sleeper. There doesn't seem to be a way to adjust for that.* Apparently, it only shows the CO level if it is high. I'm used to being able to see a display of the current CO level as well as the peak. With this meter I'm kind of left in a mystery until it actually alarms.If I am wrong in some of my assumptions of operation, which I might very well be, it's because the instructions simply aren't very clear.It comes with minimal wall mounting hardware but then the unit doesn't weigh very much so it probably doesn't need very much support. I tend to set my detectors close to my bedside or near combustion sources.It appears to be a bare bones unit with very little information available, but it is a good name brand and very inexpensive so I'm giving it the benefit of the doubt.
Verified Purchaser · April 27, · ✓ Amazon Verified Purchase
★★★★★
Really are low level detectors.
It took reading the instructions but these low level CO detectors are great!
Verified Purchaser · April 27, · ✓ Amazon Verified Purchase
★★★★★
An Essential Device That Can Save Your Life
This is a very compact unit from Kidde, a well known manufacturer of fire extinguishers, that's easy to place in a room and take pretty much anywhere when traveling. It uses AA batteries, which I like because some carbon monoxide (CO) detectors have fixed 10 year batteries that cannot be replaced, and they also cannot be powered off - not good if the Test button is accidentally pressed in carry-on baggage. While I understand the ten years on those products correlates with the optimum service life of their internal sensors, I prefer to have the flexibility of battery replacement as well as the ability to completely power a unit down while traveling by removing the batteries. This particular Kidde detector allows this.The purpose of a CO detector is, obviously, to detect carbon monoxide gas in whichever room people are in, especially while we're sleeping. CO has no odor, and yet is a poisonous gas that can kill us, especially when we're not awake. A malfunctioning furnace, water heater, stove or any other gas powered appliance can be sources of CO, as well as closed-off fireplace dampers, barbecues, generators, etc. that burn fuel. The biggest risk is in homes with poor ventilation, garages with a car running -- you get the idea. So a CO detector is an essential device for any place where this nasty, odorless gas may be present.As for the Kidde detector, it's pretty straightforward to use. It should be placed close to where you sleep, and should be a few feet away. It should NOT be in an unoccupied area of a home, as these detectors are intended to be where we are, not in another room or floor. It has a very small LCD screen that should have "CLr" displayed, meaning that no gas is being detected. If it is detected, an alarm will go off, similar to a smoke detector, and the level of gas should be displayed in parts per million (PPM). The unit can be tested by pressing the Test button for a couple of seconds - the alarm is quite loud, so be ready for that. There's a second button that is used to see what the peak level of gas is or has been in PPM. The manual does not explain this function well, as there is no diagram with controls shown along with their function. But the main point is when the alarm goes off for any level of CO gas, everyone should immediately open windows or get to a well ventilated area, and then shut off any obvious CO source such as a gas-fired stove, furnace or fireplace once windows have been opened.For its reasonable price, you should be able to put one of these in or near every room where people are sleeping, giving you some peace of mind. For that reason I believe everyone should get one.
Verified Purchaser · April 7, 2 · ✓ Amazon Verified Purchase
★★★★☆
Necessary home protection
The Kidde Carbon Monoxide Detector, AA Battery Powered, arrived quickly and is easy to set up. The very loud alarm will definitely make you notice when it is triggered. The device is compact and can be taken on trips for added protection. We liked the ease of moving the device to different areas as needed. It would be a good idea to purchase several of these devices to cover the entire home. The controls are easy to read and set which makes this a very useful tool for family protection from carbon monoxide poising. We appreciated the red LED warning light and the silencer button which comes in handy. Overall this was a good value.
Verified Purchaser · April 20, · ✓ Amazon Verified Purchase
★★★★★
Compact, Simple CO Detector That Is Easy to Place
This is a straightforward carbon monoxide detector, which is exactly what I wanted. It is small enough to place on a shelf or pack for travel, and because it runs on AA batteries, it does not depend on having an outlet in the right location. That makes it useful not only at home, but also for rentals, hotels, or temporary setups where I still want basic CO protection.Setup was simple. The display is easy to read, the test button is accessible, and the status lights make it clear that the unit is powered and monitoring. I also like that the batteries are replaceable instead of being built in, since I prefer being able to swap them myself.The alarm is loud enough that I would expect it to get attention, and the overall build feels fine for a small safety device. I would not call it fancy, but for something like this, reliability and simplicity matter more than extra features.One thing to keep in mind is that this is only a carbon monoxide detector, not a smoke alarm. It also needs to be placed correctly and tested periodically, like any safety device. The small size makes it easy to move around, but it also means you need to be deliberate about where you put it.Overall, this is a practical, compact CO detector that works well for home backup protection or travel peace of mind.
Verified Purchaser · May 26, 20 · ✓ Amazon Verified Purchase
Showing 9 of 39 Amazon reviews.
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