The S202S01F is a Solid-state Relay (SSR), integration of an infrared emitting diode (IRED), a phototriac detector and a main output Triac. This device is ideally suited for controlling high voltage AC loads with solid state reliability while providing 4.0kV isolation (Viso(rms)) from input to output. Screw hole for heat sink. Phase or power control in applications such as lighting and temperature control equipment.