tact switch 1)ROHS and W/O ROHS 2)UL,CE, ... , VDE,and so on. 3)PA66, PA6,PBT,UL94V-O tact switch MATERIALSBASE: UL94V-0 PBT Thermoplastic, Color: BlackCOVER: UL94V-0 ... initial.Insulation Resistance: (at 500VDC)1000m minDielectric Strength: 500VAC/1minute.. tact switch