Eaton's E50 modular plug-in limit switches are the industry standard with versatility of design and high reliability for low maintenance, installation and inventory costs. Standard Viton gaskets, seals and boots and a zinc die -cast enclosure provide exceptional chemical resistance to the common coolants, cleansing agents and hydraulic fluids found in machine tool, automotive, wastewater treatment and other heavy-duty industrial applications. Mounting dimensions accommodate both U.S. and DIN standards for easy retrofit installations. Super bright 24 120 Vac/Vdc LED indicating light versions simplify setup and troubleshooting operations. This listing is for Each.