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Joe
Reviewed in the United States on March 8, 2025
Pros and Cons for 3in1 Plug in Carbon Monoxide Detector AlarmPros:- Light and mostly non-intrusive- Battery Backup- Portable- Good price- Reputable Company- Provides temperature/humidity readingCons:- NonePro or Con:- It comes with a Lanyard attached. This is good if someone is using it as a portable unit all the time (i.e., taking it camping, etc.). But for everyday home use, it gets in the way. Luckily, it can be removed.A few years ago, we had a major ice storm that knocked out power for a week. We had to use portable camping-like heaters that are OK for indoors but not the best. Here's the thing. If there were carbon monoxide readings, we'd never know because the power was out and our detector was getting no power. This, however, has a long battery life (10 days), which means it works even during an extended outage.For people who travel a lot or need one in their RV (or on a camping trip), this is also a good option.I didn't find anything wrong with this detector and have it plugged in where I hopefully never have to hear it go off. But if it does, it's nice to know I will have time to act.5/5 stars
TurtleWax
Reviewed in the United States on March 7, 2025
Pros: Easy to read large numbers for CO level. Adjustable brightness of display, Alert is mutable, On/Off button so you can turn it off when running off batteries and not using gas appliances in the RV. Good battery life.Cons: Large display blocks off multiple plugins if using a power strip but should be fine on a normal outlet.Summary: Overall easy to use and can take it anywhere you would use a gas appliance or heater.
RMD
Reviewed in the United States on March 2, 2025
I am fairly certain I had a CM situation awhile back after some roofers messed up the lid on the external exhaust pipe from the water heater. At the point that I realized there was an issue and I went to check the monitor I realized the battery was dead. Of course it was ...That's when I realized you really need both options. So I keep the battery powered one and am now much better about checking it but also have this plugged into the wall. I have it on the opposite side of the kitchen from the stove/oven which as gas powered. This seems to be far enough away that it doesn't go off when I am using these appliciances, but close enough that if I were to experience a leak it would detect it.So far it has been good. I truly hope that I never have a leak to know how well it works, but I feel much better knowing I have an always running option plugged into the wall.
Willy Richardson
Reviewed in the United States on March 2, 2025
This is a relatively inexpensive carbon monoxide detector. I'm still deciding if I like that it plugs into an outlet, or if I would just prefer the type has a battery and sits on a wall.I like that the display can be dimmed.It says it's a "3 in 1", but it's not detecting CO2, smoke or other harmful gases. It's just detecting CO plus reading temperature and humidity. I can get temperature and humidity from the weather app on my phone.
Doug in California
Reviewed in the United States on February 24, 2025
We were going to head to the hardware store for some basic plug-in detectors, but then we stumbled upon these on Amazon for around the same price and figured we'd give them a try. And wow, they're fantastic! You just plug them in and can forget about them, yet it's super easy to see from across the room that they're active and monitoring. This is way better than those hardware store ones where you can barely tell if they're even on unless you hit the "test" button. These definitely give you much more peace of mind.They do come with a pretty decent internal battery, though I'm not entirely sure how long it would last just on battery power. It says it should last for 10 days, but I'd rather not have to recharge it every couple of weeks. I'd prefer to just keep it plugged in all the time and use the battery as a backup. One thing I've noticed is that it does seem to get a little warm when it's constantly plugged into AC. It's not alarmingly warm, but it probably uses more power than it needs to. The battery option would be really handy if you were camping or using it in a trailer, where gas poisoning is a real concern.
N. Knutsen
Reviewed in the United States on February 17, 2025
This is a product that you hope will never be needed but you want it to work flawlessly in the event it detects carbon monoxide in your home. The instruction manual supplies a test to verify if it working properly. The test tells you to burn a small piece of paper then blow it out in an enclosed space with the CO detector. I tried this test and was quite pleased to see the CO reading almost instantly shoot up (See photo). The product is UL approved. Some other brands CO detectors claim that you don’t want UL approval because it either allows low levels of CO to go undetected or alarms too easily. That is not a problem with this CO detector because it displays all CO levels in parts per million. If the level is 50 ppm or less there is no alarm, an alarm is sounded every 3 minutes for CO levels between 51 and 200 ppm, and at levels above 200 ppm the alarm sounds continuously.The product can run off of an internal battery or be plugged into the AC line. I measured the power consumption at 2 Watts when plugged in. I also noticed that when plugged in it got slightly warm to the touch. This resulted an inaccurate temperature reading. The humidity reading agreed closely with other devices that I have.When running on the battery, you can remove the plug and replace it with a cap with a magnet on it. This allows you to stick it on a steel object for easy display. I think the magnet was supposed to be glued to this cap but it was loose in the unit I received. This was easily fixed with sone double stick tape. In short, this appears to be a very good carbon monoxide detector that can easily be tested to determine if it is operating properly.
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