Determining the calibration cycle of temperature switches requires comprehensive consideration of various factors. Generally speaking, following the recommendations of the equipment manufacturer is the primary principle. Usually, they will give an initial recommended calibration cycle value based on product design, material characteristics, and a large amount of test data, which provides a basic reference framework for users. However, the actual use environment of the equipment has a significant impact on the calibration cycle. For example, temperature switches frequently used in harsh environments such as high temperature, high humidity, and strong corrosiveness, due to facing more severe working conditions, their performance degradation speeds up, and the calibration cycle should be correspondingly shortened. In addition, the criticality of the tasks undertaken by the equipment cannot be ignored. If the temperature switch controls the temperature of key links related to production safety and core product quality, to ensure everything is foolproof, even if the equipment is in a relatively mild environment, it is advisable to shorten the calibration cycle and increase the calibration frequency. Furthermore, the data trend analysis in past calibration records can also provide a strong basis for adjusting the calibration cycle. If it is found that the deviation value of a temperature switch gradually increases over time and the increasing rate exceeds expectations, its calibration cycle should be re-evaluated and shortened in a timely manner to ensure the stable operation of the system.