Double rocker. For all buttons and handheld transmitters, we supply double rockers in all button and handheld transmitter colors offered with laser engraving. Prints with a maximum of 6 lines must be described and we then engrave them in Arial font. A maximum of two lines each at the top, in the middle and at the bottom. If we receive an Adobe Illustrator or Corel Draw file with the extensions .ai or .cdr by email to LGI eltako.de, we can also engrave individual customer specifications.