MSA Altair Hydrogen Sulfide Gas Monitor (H2S) Parts or repair. I have no way to test don't know how it works does not power on might just be a battery? Selling as is parts or repair.
MSA 10107602 Altair 4X Gas Detector - Charcoal
MSA Altair 4X Multi Gas Meter Monitor Detector, O2,H2S,CO,LEL
Msa Altair Pro H2S Single Gas Detector, 10074136, calibrated, Cal Cert Included