Rocker laser engraved. For all pushbuttons, switches and handheld transmitters we provide rockers and double rockers offered in all colors with laser engraving. Other prints with a maximum of 6 lines must be characterized and then we engrave it in Arial font. Maximum of two lines at the top, middle and bottom. If we receive an E-mail to LGI@eltako.de with an Adobe Illustrator or Corel Draw file with the extension .ai or .cdr, we engrave individual customer requirements..