widely used in Digital, Video-recorder, Acoustics, Power-amplifier, TV, VCD, DVD, Refrigerator, Automobile and other electron Yueqing Tong ... , power switch (buttonswitches, toggle switches, micro switch), CRT tube socket, audio and video jack(RCA jack),headphone jack, touch switches, S ... patronage, sincere cooperation, the grand total. Earphone Jack( EJ-3.5-1)