The use of intrinsically safe (IS) barriers from Phoenix Contact in the control panel, is discussed. IS barriers limit energy levels in hazardous area circuits to prevent arcs, sparks or thermal effects from causing an ignition. It eliminates the need for bulky, expensive explosion-proof/purged enclosures, sealed conduits, glands, and fittings that were previously used. The easy-to-use LED indicators and wiring diagrams on the front face of the devices aid in troubleshooting, while technical specifications printed on the housing provide a simple reference check.