1.1.1 General Addition: These particular requirements apply to refrigerators, frozen-food storage cabinets and food freezers (fitted with their accessories) for household and similar use, supplied from the mains or from batteries. 1.1.2 Types of noise Replacement: The methods specified in ISO3743‑1 , ISO3743‑2 and ISO3744 can be used for measuring noise emitted by refrigerators, frozen-food storage cabinets and food freezers. 1.1.3 Size of the source Replacement: The method specified in ISO3744 is applicable to noise sources of any size. When applying ISO3743‑1 and ISO3743‑2 , care should be taken to ensure that the maximum size of the refrigerator, frozen-food storage cabinet or food freezer under test fulfils the requirements specified in 1.2 of ISO3743‑1:2010 and 1.3 of ISO3743‑2:1994 .