Route-Master Fieldbus System has a new ATEX approval (FM pending) as a redundant intrinsically safe fieldbus system, permitting the connection of any mix of FISCO and Entity devices. This is the first fieldbus system approval to offer FISCO compatibility and power redundancy. A Route-Master system consists of up to eight trunk isolator modules in a 19-in. rack, each connected to one or more RM100 fieldbus device couplers.