Powered by 240 volt, with a moulded plug, and certified switch - this lamp detects the tin coating which exists on one side of float glass. This is our custom made and designed version which is much easier to use than previous ones and is actually available. A must for consistent results when working with float. Simply place the UV window against the glass - the tin side will appear foggy. Available in Black, White, Blue, Red, Green, Orange, Silver and Gold - either add a comment to your order with a colour preference, or we will pick one at random. Yes, the bodies are 3d printed, but they are made from a high quality filament and printed on a high quality printer. It simply wasn't economical to have the bodies made by an external party at the volume we are expecting. This device emits UV-C through the window, do not look directly at the light source.