Carbon Monoxide Detectors, Portable CO Detector with Temperature Sensor ＆ LCD Backlight Screen, Handheld Carbon Monoxide Meter Tester 0-1000PPM Range, Indoor/Oudoor (Includes Battery x3)

A must have while traveling. I am an HVAC tech and use this while traveling. You cannot believe how high the CO2 is in some of the higher end hotels where the windows are sealed. I was in one a few weeks ago and it was almost 2,000ppm in the room. That is headache territory. More people need to complain to these corporate hotel chains and use pics from this detector as proof. I took some pics of before and after I opened the window to show how much of a difference it makes knowing how stale the air is.

This portable carbon monoxide detector is a life saver, and I mean literally! It has many use cases. Do you want it to be your 1 and only detector for an entire household? No, of course not! Its meant to be portable. Take camping, take into your RV. Take it to a hotel, whatever the case is.I can tell you this, it is coming with me anytime I travel from now on. Its coming to hotels or anywhere else I go!It has a bright LED display. It showcases the carbon monoxide level large and front and center. Then it has the humidity level, temperature, and battery level indicator as well. You can set the PPM detection (parts per million) to a higher or lower value depending on your use case.Its extremely portable, extremely convenient, and it includes a strong magnet that you can use to mount it or a paracord with a carabiner attachment to hang it on a thumb tac or nail etc.The biggest downside is the volume. For the size you knew it would lack somewhere and its the volume at which the alarm goes off at. Its not the loudest. I haven't tested actual dB levels but its not waking up the entire house. Keep it close to you in a hotel for sure. The battery life is great. I find myself charging it once a week for about an hour. It is USB C rechargeable.

I made an initial, brief test for functionality and found that it works as expected. Temperature looked reasonable; humidity probably OK; CO went from 0 to 5ppm for a brief time after a match was snuffed out nearby. The only difficiency is with the AC power plug adapter. It uses a bayonette type mating action. After it clicks in, the plug is still quite loose rotationally and can easily turn enough to break the connection, turning the unit off. It would not be good for steady readings in a vibration environment, without some additional means to keep it from rotating. For my intended application it is not a serious problem, since I don't expect it to be bumped while unattended.

Practical and very good low budget investment for your families well being and piece of mind.How so you may ask?Recently at 11pm at night our CO2 detector went off~~~Of course we were alarmed, no pun intended, so we checked all we visually could, but for piece of mind called the fire department.They came out at midnight, had a similar grade commercial grade detector, gave us an ALL CLEAR and let us know we had zero CO2 leaksBut the visit was very informative. As we found out our CO2 detector only had a life span of 5-7 years, due to the pattern of the beeps, our unit was extinct.So we bought 2 new detectors and this testing device to be certain we are not or ever in harms way

This CO detector is lightweight, compact, and fits easily into a suitcase without taking up much space. If you travel, this is cheap insurance to ensure your hotel room isn't filling with CO in locales that might not require CO detectors, like the Caribbean. In testing near known CO sources, it works well and is definitely loud enough to get your attention.

This review is for the plug in style CO detector, purchased in a 1 Pack. Initially, this detector worked well and looked good. It's very easy to read and get the info you need at a glance. Unfortunately, the detector died after less than 5 month and now will not power on at all. I've been unable to figure out how to contact the manufacturer and I can no longer return through Amazon. Buyer beware.Update: After submitting my review I was contacted by the seller with an offer to refund my purchase price, or receive a replacement detector free of charge. I chose to replace the detector and a new one was shipped out immediately and received within 2 days. U appreciate the seller standing behind their product. Hopefully the new detector has a longer lifespan.

I have been looking at these for a while. I wanted to have a backup in our camper that comes with a detector. Love how simple it is. No need to fix on a wall for a permanent fixture. Just plug in and go.

Nice large display. Good product at a low reasonable price.