- Limiting legal liability related to misuse of a product. This is important to products, which can cause serious injuries or death, when used improperly. Technical areas which come to mind first – high voltage devices, lasers or other intensive light sources, heat and fire generating devices, various mechanical tools, etc. Placing appropriate tags within a manual warn the end-user and protect the manufacturer from serious legal consequences. In addition to that, warning stickers shall be applied in clearly visible places on the product, especially next to openings enclosure openers and interlocks.