This Harmony RXG plug-in relay socket has a coil control voltage of 12V 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)."