Solid State Relay provides complete electrical isolation between their input and output contacts, with their output acting similarly to a conventional electrical switch. This has a very high, almost infinite resistance when no conducting and a very low resistance when conducting. This is very much liked and highly appreciated by people, in the market. Solid State Relay is incredibly useful and powerful components for switching AC and DC loads on and off while providing electrical isolation between the control and the load. When quick, frequent switching is required, this state relay is appropriate.