<P> A time temperature indicator (TTI) is a device or smart label that shows the accumulated time - temperature history of a product . Time temperature indicators are commonly used on food, pharmaceutical, and medical products to indicate exposure to excessive temperature (and time at temperature). </P> <P> In contrast, a Temperature data logger measures and records the temperatures for a specified time period . The digital data can be downloaded and analyzed . </P>

Where is a time-temperature indicator (tti) most commonly found