Mains switch. For models Ferguson ICC8, Sony 102TX0419, Sony C25TP51, Sony C42321, Sony C42342, Sony C42342N, Sony C42342P, Sony C42371, Sony C42371N, Sony C42371P, Sony C51371, Sony C51371N, Sony C51371P, Sony C56121, Sony C56167, Sony C56312, Sony C56312N, Sony C56312P, Sony C56322N, Sony C56322P, Sony C56351N, Sony C56351P, Sony C56521, Sony C67112, Sony C67121, Sony C67134, Sony C67521, Sony C67551, Sony C67561, Sony C67581, Sony C67591.