The button sized Glo-Discs with self adhesive backing are simple to position on your light switch or any other item that you need to locate in the dark. You can choose either a clear case, to blend with any surface, or a green luminous case (shown below, right) for greater identification.
Every Glo-Disc contains a robust glass vial encasing a revolutionary gas which creates a bright light, without batteries, electricity or maintenance, which will remain bright for years and years.