From need to security.
  BÅTLJUSET nordic develop and marketing a illuminating
  system for escution plates in cam switches and push
  buttons type Kraus & Naimer and other controls for ships,
  vehicles and machines since year 2003.
  The system has been developed in cooperation to The
  Swedish National Administration of Shipping and Navigation
  and other authorities. 
  We have many years of experience at the market of cam
  switches from industry, installations and automations. 
  Today we can offer you a very small LED-lamp switchebel 
  to white or red light and adjustable in intensity.
  See installation at our Webb site References/HMS Belos
  or click here.

  Bo Mineur