Multi-gas detector with up to four independent sensors for detection of oxygen, combustible gases and vapors, carbon monoxied and hydrogen sulfide. IPX5 rated protection against water ingress. Rugged metal plated ABS case. RFI Immunity to 40V/m. True one button operation. Large front mounted backlit display. Loud alarm (92dBA @ 1 foot). Rubber boot available. Real time display of pump status. Automatic low flow alarm. Standard black-box data recorder with over 40 hours of storage. Up to four sensors. O2, LEL, CO and H2S.