chrisjr77 Forum Member Nov 25, 2009 #1 sniffer gives you a readout of how much oxy is in the room (confined space) and alarm goes off if co2 and other odorless gasses are present works great $$$$$$$$best offer$$$$$$$$$ Last edited: Dec 7, 2009
sniffer gives you a readout of how much oxy is in the room (confined space) and alarm goes off if co2 and other odorless gasses are present works great $$$$$$$$best offer$$$$$$$$$