Temperature labels are used to measure surface temperatures. These labels change color or darken to indicate temperature. When selecting a label for your application, first decide between a reversible or irreversible indicator. Then consider the direction of approach. Temperature labels are available in ascending and descending versions. Choose an ascending label if you want confirmation that a particular temperature was reached and a descending label for confirmation a low temperature was reached. Temperature labels are ideal for shipping, food processing, storage, aquariums, industrial manufacturing, and electrical.