Gas Leak Detector 4-in-1 (H2S, EX, O2, CO) - Reliable Home and Workplace Safety Monitor with Precise Detection - Rechargeable, Rugged Build, Instant Alerts - Temperature Range: 14°F to 131°F

I like that this comes with a storage bag and it shows the numbers on screen. I thinks it's also great because it tells you the level of dangerous for each number on the detections. It is not to big, so it doesn't take up much room to store it either. As far as I can see it charges well and is pretty accurate as well.

Came quickly, easy to use. Comes with a case, made of very sturdy material. Compact size and long lasting battery.

I picked this 4-in-1 gas leak detector specifically for trying to detect Hydrogen Sulfide leaking from an improperly sealed sewage ejector pump basin. The added detection functions were just a bonus for me.I set the detector by right by the ejector pump basin and left it. naturally a day or two later I went to check it and the battery had died. I fully expected that. what I did not expect was upon powering it back up it was improperly reading both H2S and CO at the maximum levels. Rebooting the device did not help, moved it to other areas where I knew these gases were not present. nothing worked. I attempted to find a setting to recalibrate the detector but did not find anything.. some settings were password protected though so perhaps there is a way to do it, but nothing I could find and i have no clue what the password is. as it stands this was a complete waste of money for me.It turns out this detector is not good for that as H2S can be smelled with as little as .05 ppm... given that this detector has a resolution of 1ppm for me to detect the H2S with this detector it would need to be as much as 20 times the amount past which I can smell it. I do not fault the device for this at all, I just thought it might be useful information to include for someone else who may be looking for the same reason I was.

This is a great gas meter and safety device. If you do anything in confined spaces, such as going in tanks or even crawl spaces, this is a good tool to have on your person with its ability to monitor O2, Hydrogen sulfide, CO, and combustible gasses. I don't have any way of measuring its accuracy, but it did detect natural gas from my stove and propane from my grill. I'm a scuba diver and I have a bottle of Nitrox at 33% oxygen, I put this next to the regulator and cracked open the valve and it read 30%. I think that might be the highest this thing reads. Overall I think that this is a great safety tool, easy to use, the rechargeable battery lasts a long time and it has alarms (vibration, visible and sound) to alert you if there is a dangerous situation. The battery is charged with a USB-C connection. The unit is intuitive and easy to use, especially if you have any experience with leak or gas detectors. I'm not sure of the lifespan of the sensor since the advertisement says 2 years and their documentation says 1 year, that is the reason I took off one star. I'm also not sure of how to tell when the sensor is bad, maybe it will error out?I still would recommend this product.

The gas detector meter is a must have for safety to analyze the air quality in confined spaces BEFORE entering in. I bought it to inspect for any natural gas leak in the pipes located at the basement of a new construction house.I have tested the gas detector meter in a range to dectect natural gas and it worked pretty well, the OPPM percentage reading went up very fast. I liked it!

Rugged built , easy to set up.

I just got this gas monitor and waiting to put it to the test. Took a while to charge it to the point that it would operate. I will report back on my tests.

I use it at work, the readings are quite accurate