“This Harmony RXG plug-in relay socket has a coil control voltage of 110V DC and has 2 changeover contacts DPDT (double pole double throw) with a rating of 5A.””It has large choice of number of contacts for high rated current use with space-saving design.””It also offers a lockable test button.””The faston pin terminal mounts quickly and securely.””It helps to reduce the size of enclosures and increase machine reliability, you can mount nearly everywhere.””Workability for hard-wired logic automated systems to complement the functions of industrial programmable logic controllers (PLCs).”