... PC,3M adhesive b. Passed ISO9001,ISO14001,RoHs c.UV resistance/flexible circuit board Membrane switcha. Overlay Materials: clear ... as Shielding, Windows/Lens Coating, Embossing, Embedded LEDs, UV glossy/matte/textured, etc. Tactile membrane switch embossed LED ... Ω(According the trace length and materials to confirm) Insulation resistance>100MΩ 250V(DC)Contact bounce≤5msDielectric withstand250VRms(50 - ...