Series 09 Universal Switches EAO Series 09 Universal Switches offer an unlimited combination of switching functions for various vehicle applications. These switches feature a modular, ergonomic design and an appealing, durable surface coating with fantastic haptics and tactile feedback. The series 09 switches are available in single and dual-contact variations and offer universal configuration options. Typical applications include a menu/reset button, transmission control, SOS and hazard light switch, and various driving functions.