Multigas 4 Gas Monitor | with USA NIST Calibration Certificate | CO, H2S, CO, EX LEL |

Very nice product, can definitely compete with the more known brands. It keeps up very well. Battery life is satisfactory it keep stamina a full day.We use it in a HVAC setup, to enter steam/hot water boilers. cleaning, repairs (refractory, tube repairs) and inspection of the boilers. So you got an idea what conditions we expose it to.

My normal unit failed in the field and I purchased this unit with overnight delivery. I opened the package, and found a well built unit that was easy to use, calibrated (with certificate) and ready to charge. I used it the following day and I am hear to tell you about it, so it must have worked, or at least I was in an area where I was safe, and ensured that it was safe due to this product. The only thing I might mention in a negative fashion was, in direct sun light the screen was difficult to read, but in my Sump and indoors, I could read it easily.I was able to complete my work thanks to this product.Carl

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The media could not be loaded. I am vetting inspector working on board ocean going Petroleum and Gas ships.As a part of my job and to be a good role model to the ships crew, I carry this personal gas detector with me. I bought it 3 months ago. It works perfectly.Battery - I use it for about 3 hours every ship and it lasts about 3 ships ebfore recharging. I also like that it has a usb recharge and no need to carry a separate bulky charger.It clips on the boiler suit pocket.It also looks very stylish.It does the job from the safety point of view. It arrived with a calibration document valid for 12 months.I highly recommend it.

I was worried when I bought it because of the price tag, I didnt want to buy some knock off trash that I could have spent 100$ on. I wanted quality. I knew it worked when I breathed on it and it warned me every time. I trust this and will be taking it with me while cave exploring.

There is no confusion with using this device. The multi color display updates, continually and notifies of any concerns and change of gas detections via audible alarm, vibrating, and flashing light.

Worked well, but battery failed less than a year from purchase. I cannot even get any charge to stay when plugged in. I wrote website for help and to inquire about 1-year warranty. Have not heard anything back. Please contact me to resolve. Thank you.

Exactly what it says it is & seems to be made tough. Passed inspection for use at a federally regulated mineral mine.