DC1-127D0FB-A66CE1 is a product code associated with an Eaton DC1 series control relay. It is an industrial control module with two Form C (SPDT) contacts, rated for 10amps at 24-240VAC, and 50/60Hz. The operation of the module is based on an open, close, or latching operation mode. The module also has an LED indicator to signify its status. The module is compatible with most Eaton industrial automation systems.