Water-resistant Quattro 4 Gas Multi-Gas Detector H2S, CO, O2, LEL Multi-language
Detector H2S, CO, O2, LEL Multi-language. H2S, CO,O2,LEL. QUATTRO 4 Gas Multi-Gas Detector. With flexible power options, the GasAlertQuattro is always ready. Water-resistant Quattro 4 Gas Multi-Gas. Bright wide-angled visual alarm bars.