Hello & Thanks for stopping by! Offered : MSA IR GAS MONITOR 29% LEL W/O Propane Frequency , 0 -100% LEL Plugged this in and Display did work. Please see all photos for display values UNTESTED but returns accepted if this does not work
BW Technologies Micro original four gas monitor! (o2,co,lel,h2s)With New oxygen sensor and calibrated. Most used gas monitors need a new oxygen sensor,,, they last 2 years and cost around $ 125.00.
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