... 2.Rotational life : 100000 cycles 3. Brand: ALPS Rotary encoder Potentiometer and switch use for Sound Instruments, car amplifier, DVD ... for musical instruments, audios,medical equipment, Walkie talkie,DVD,GPS navigation,toys ,automotive accessories (car amplifiers) Volume ... , computer /multimedia peripheral products, VCD players and DVD players, and other electronic equipment and household appliances. ...