Relay-Sugar Cube is an electromagnetic device that is used to isolate two circuits electrically and connect them magnetically. They are very useful devices and allow one circuit to switch to another one while they are completely separate. They are often used to interface an electronic circuit (working at a low voltage) to an electrical circuit that works at very high voltage. Get Details: https://www.campuscomponent.com/products/relay-sugar-cube-12v-7a-1co-re-2608-d/2208614000018231600