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Gas Detector, ACEGMET 4 Gas Monitor Multiple Indicator (Vibration, Audible, Visual) H2S, O2, CO and LEL 4 Gas Monitor Personal Rechargeable 4 Gas Meter 2 Years of Sensor Life Gas Sniffer - - Amazon.com
Combustible Hydrocarbon Gas Detector & Catalytic Bead Sensor | Pem-Tech, Inc.
Combustible Gas Detector | PureAire LEL Gas Monitor
Gasclip Multi Gas Clip 4 Gas detector with pellistor LEL sensor
Honeywell BW™ Ultra Gas Detector - O2/LEL/H2S/CO/NH3/Y/NA | Indiana Safety and Supply Company