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Kidde COBDL Carbon Monoxide Alarm with Low-Level CO Alerts
$42.97
Final price set by Amazon · may vary
The Kidde COBDL is a battery-powered carbon monoxide alarm with low-level CO alert capability and a backlit digital display. This model is designed for households with elevated concern about chronic low-level CO expo...
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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The Kidde COBDL is a battery-powered carbon monoxide alarm with low-level CO alert capability and a backlit digital display. This model is designed for households with elevated concern about chronic low-level CO exposure — particularly those with infants, elderly occupants, pregnant women, or individuals with cardiovascular or respiratory conditions for whom sub-alarm-threshold CO concentrations may present health risks.
Construction and Design
The COBDL uses the same compact, battery-powered enclosure as the COB and COBD, supporting tabletop and wall-mount installation without outlet access. The unit runs on AA batteries replaced approximately annually. The digital display activates on button press, showing current CO concentration in parts per million. Low-battery alerts suppress audible chirps during nighttime hours, a practical feature in bedroom installations.
Detection Performance and Low-Level Alerts
In addition to UL 2034 alarm thresholds (70 ppm sustained, 150 ppm at 10–50 minutes, 400 ppm at 4–15 minutes), the COBDL provides notifications at CO concentrations below the standard alarm threshold. These low-level alerts are calibrated to inform occupants of ongoing CO exposure that, while insufficient to trigger a standard alarm, may affect sensitive individuals over extended periods. This makes the COBDL appropriate for homes with gas appliances, attached garages, or older heating systems where chronic low-level CO is a documented concern.
Strengths
- Low-level CO alerts notify occupants of sub-threshold concentrations before they reach alarm levels
- Digital display provides concentration data for informed response decisions
- Battery-powered for flexible placement in any room
- Nighttime low-battery chirp suppression for bedroom use
- 10-year limited warranty
Limitations
- Annual AA battery replacement required; the COBDL10 offers 10-year sealed battery with same features
- No Wi-Fi connectivity; low-level alerts are local only — the COPDLQW adds remote notification
- Low-level alert sensitivity may require occupants to investigate more frequently than standard-threshold models
Recommended Applications
The COBDL is best suited for sleeping areas and living rooms in homes with elderly residents, infants, or individuals with cardiovascular conditions. It is particularly appropriate for homes with attached garages, gas ranges, gas water heaters, or forced-air furnaces where chronic low-level CO is a realistic concern. For a 10-year battery version, select the COBDL10.
Verdict
The Kidde COBDL provides meaningful protection beyond the UL 2034 standard minimum — specifically, early warning for the populations most vulnerable to chronic low-level CO exposure. It is the correct choice among AA-battery Kidde models for households with health-sensitive occupants. For remote alert capability paired with low-level detection, the COPDLQW is the appropriate smart-connected upgrade.
Brand / Vendor
Kidde
Model / SKU
COBDL
Product Type
Carbon Monoxide Alarm
Price
$42.97 (Amazon)
Rating
4.8 / 5 — reviews
Availability
✓ In Stock 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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