Keyboard switch 1)certificates:UL,VDE,TUV for push button switch 2)materials;metal nylon bakelite 3)free ... 1)certificates:UL,VDE,TUV for push button switch 2)materials;metal nylon bakelite 3)free for samples ... switch Rated Current; 1A~120V.AC. 1A~250V.AC.2.Electrical life: 10,000 Cycle3.Temperature: 75 - 1054 ... Advantage 1. CQC,TUV,UL,CUL,ROHS certification 2. Over 10 years experience in the filed of ...