特点
positive tactile feedback.
   sealed against flux solding.
   unique dust-proof construction.
   available with cambered terminal to
     ensure selfretention on the printed
     circuit board in manual insertion or
     automatic insertion machines.

 应用范围
  operating switches in all types of
      electronic equipment as audio
      apparatus,office equipment , tv
      sets,vcrs,heating control
      system, microwave ovens.etc.