A robust and accurate portable gas detector, the Marine 4™ provides unrivaled protection in confined space applications, with audible and visual alarms in the event of exposure to flammable or toxic gases. Detecting and displaying up to 4 gases simultaneously, it is suitable for a host of applications in a variety of industries. The Marine 4™ can be configured to detect a combination of methane, oxygen, carbon monoxide, hydrogen sulphide, as well as other flammable gases.