FuzNuz Horse Equipment
Straightforward
Not much to this unit. Just turn it on and after a brief pre-heating it starts taking measurements. Seems to work properly with CO, combustibles and oxygen. I didn't have any H2S sources to test with. The unit has a secure clip that clamps onto clothing and it makes a pretty loud alarm when any of the indicators dip below the preset alarm levels. Great for confined space entry and just as a general gas meter system.