FeaturesAnodized aluminum mounting ringsWatertight double V-gasket sealsExtended height bulbsTransparent housing contact blocksColor coded contact blocksGold plated contacts (on Low-Voltage contact block)Reliability ridge on movable contactStackable screw mounted contact blocksContact blocks can be mounted in left right or top bottom positionsBright and long lasting LED indicating lights in 6 colorsLimited number of operator typesLow profile designStandard industry appearanceSupplied complete with grounding kits