3M 740 Series, Portable Multigas Detector

Durable, Easy-to-Use, Convenient—All at a Low-Operating Cost

This affordable, portable Multigas Detector is ready to go when you are! Great choice for industrial sites or in confined spaces—anywhere potentially hazardous levels of CO, H2S, O2 or combustible gases may be found. This tough, multifunction Detector contains three separate alarm indicators, sensor replacement packs and heavy-duty construction.