It has large choice of number of contacts for high rated current use. It also offers LED indicator to alert on the current status of the relay. It helps to reduce the size of enclosures and increase machine reliability, you can mount nearly everywhere. This RPM product is IP40. Workability for hard-wired logic automated systems to complement the functions of industrial programmable logic controllers (PLCs). Status display with LED, clearly signal both in the day and night. Status display with LED, clearly signal both in the day and night.