... ,rotary switch,tact switch,keyboardswitch,dip switch and so on;2.Power sockets: a.IIEC sockets:snap-in,screw-on,socket ... ,socket with rockerswitch,Snap-in and screw-on for PCB,b.2 pin AC power socketc.3pin ac power socket/mickey socket ... .5.Industrial socket :German,France,British and so on Chinese 2.5mm earphone jack