atx switching power supply : 1.Passed ISO9001,ISO14001,ISO/TS16949 2.Rotational life : 100000 ... Brand: ALPS Rotary encoder Potentiometer and switch use for Sound Instruments, car amplifier, DVD player and GPS navigation We produce rotary ... , potentiometer and switch.rotary encoder,potentiometer and switch for musical instruments, audios,medical equipment, Walkie talkie,DVD,GPS navigation,toys , ...