Good
Buy this 4 in 1 detector a few days ago and it was very easy to set up, just plug it in and it will start working right away. I like that it combines natural gas detection, carbon monoxide detection and temperature and humidity monitoring in a practical and efficient device.I tried it by leaving the kitchen gas open and it immediately responded with a clear and loud alarm. I also appreciate the easy-to-read digital display that keeps me informed of room conditions in real time. This is an excellent investment for any house, especially if you want to avoid risks and have peace of mind.

Reliable 3-in-1 CO Detector for Home Safety
After 83 hours of monitoring and 70 tests around my home, this PEGEMU 3-in-1 CO, temperature, and humidity detector has proven extremely reliable. It accurately tracks carbon monoxide levels and environmental changes, giving me peace of mind knowing my family is safe. The large LCD screen is clear and easy to read, and the alarm is loud enough to alert me immediately if needed.I also appreciate the compact and portable design, which makes it easy to move around or take while traveling. The plug-in setup is simple, and the low energy consumption ensures it runs efficiently without draining power. This detector is a must-have for anyone looking for dependable, round-the-clock home safety.

Security and tranquility at home, excellent product”
This gas and carbon monoxide detector has been a great purchase. It gives me a lot of peace of mind because it quickly and accurately detects any leak. The screen is clear, shows the temperature and levels in real time, and the alarm sound is loud, impossible to ignore. It is very easy to install and use, it also has a self-test function to ensure that it is always working well. Excellent value for money and essential for home safety. Highly recommended!

Small plug in CO + Natural Gas Detector with Verbal Alarms
I have older style detectors and those are as big as most smoke detectors. Because of their size, they tend to either get unplugged or set up in completely remote areas of house. So main goal was looking for something smaller that wouldn’t be in way and then could use constantly in high traffic areas of house? This fits bill perfectly! Entire thing is about size of small flip phone. Design of unit is so could actually share wall plug with something else. Construction quality is that of cheap, plastic toy. So I wouldn’t risk it any where it’s likely to get bumped.I tested mine after a small burn in period and worked like it’s supposed too. The alarm is not loud enough to hear across the house or wake you from say kitchen to bedroom. BUT you cannot miss it if you were walking into room and alarming because of gas or CO. And I really like that it verbally tells you which of 2 is making it alarm so don’t have to walk into room full of gas to read display unlike a lot of cheap units!I tested gas sensor with lighter gas and easy thing to check CO side is compressed air can, like using for cleaning electronics. (FYI, if you didn’t know these are not actually regular “air” but typically compressed hydrocarbons which will displace Oxygen and will set off CO side). Alarms are self clearing once alarm condition is gone. Which is nice that tells you when dangerous situation is clear WITHOUT you going into to reset alarm.I saw some comments basically that the unit didn’t last forever?? Another FYI, these have a catalytic type sensor. These degrade over time as react to gases in atmosphere. They will eventually stop working. Period. And this is case for pretty much all but most expensive units. So go into knowing this and don’t think it’s a forever alarm. But unless saturated constantly with A LOT of gases (like in a garage with car running), should last at least year or two.