The GasAlertMax XT II, from BW Technologies by Honeywell, reliably monitors up to four hazards — H2S, CO, O2 and combustibles — and combines straightforward one-button operation with a  robust, motorized pump for intelligent, remote sampling, ideal for confined spaces. BW’s GasAlertMax XT II is the smart, simple,economical way to compliance. BW Technologies by Honeywell,, (888) 749-8878. Circle 270