A6FR Series Piano DIP Switches Omron Electronics A6FR Series Piano DIP Switches feature a slide twin contact mechanism for higher reliability over standard models with push motion single point contact. The switches offer design flexibility with a wide variation with 18 models available with short or long actuators. Features include both ON and OFF-set soldering and are available with 2-10 No. of poles/switching positions. Applications include industrial equipment, commercial equipment, and computer peripherals.