... ContactUsed thicker sliver alloy contact the current up to 15AFace Panel and Keystroke1)4 optional colors for face plate and keystroke ... decoration style.2) Ultra-smooth non-corrugated PC material panel.Translucent Shell on BackThe shell of the socket on back ... techniques ,such as touch automatic reset module ,LED indicator, ultrathin panel , single control and double control in one. Using high purity ...