Portable Gas Detector, Gas Clip 4 Gas Monitor Meter Tester Analyzer, Rechargeable LCD Display Sound Light Shock Air Quality Tester, 2 Year Detector…

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Why did you pick this product vs others?: detects farts, didn't know what else to test with, but it appears to work and cover a range of concerning gases.

I explore abandoned PA coal mines and use this in conjunction with a safety lamp to detect hazardous gases. It's alarm hasn't sounded yet and I'm still alive so I assume it's working properly. Other than that I have no way to determine it's accuracy. It's inexpensive enough to buy a new one every 2 years and keep the old one in my pack as an emergency backup

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I just purchased my second one of these. The first the oxygen sensor went bad but that was not unexpected. If you shop around you'll find that all of the oxygen detectors have sensors with about a 24 month lifespan. This one lasted me over two years. And if you check you'll find out the more expensive devices that offer replacement oxygen sensors charge more for those sensors than you will pay for this entire device. Also you can turn the oxygen high alarm up to its upper limit and the low alarm to its lower limit and not have to listen to the alarm. This makes the unit capable with regard to the three other sensors so it's not a doorstop. And if that's not enough you can throw the thing away and still have a snazzy aluminum box that you can use for your jewelry or whatever. You also get a USB charger and cord.