The sensitive area of the label will change irreversibly from white to black at the rated temperature to give a clear and permanent record.
Fast, permanent and easy to interpret, temperature labels can be placed in locations where conventional measuring devices are not viable e.g. on live electrical, mechanical, food, and pharmaceutical products - or even in inaccessible areas.
Accuracy: +/- 2% of rated temperature, calibrated to +/- 0.1ºC.