"This Galvanically Isolated Intrinsic Safety Barrier is the perfect complement to BEI encoders for hazardous environments. It is electrically compatible with all popular counters, PLCs and controllers, and it features isolation for power and three signal channels, as well as LED indicators for power and data - all in a single DIN rail package. The BEI Barrier carries CENELEC, UL and cUL ratings and is suitable for long cable runs. Since it also carries a nonincendive designation per the National Electrical Code, it can be mounted in Class I, Division 2 areas."