... steel or transparent glass sheets, stainless steel optional word piece type PANEL HOLE OPENING SIZEΦ32.8mm ,Word of stainless steel ... glass sheets, stainless steel optional word piece type mirror, hairline, titanium; imported Omron light a switch, input voltage DC12 ~ 24V; suitable for ... the locks fixed installation; optional backlight color: red, orange, blue and other colors. 4wires lift push button