Temperature cycle test chamber (also known as rapid temperature change test chamber) is a test chamber that uses temperature acceleration techniques (when cycling within the upper and lower temperature limits, the product will alternately expand and contract) to change the external environmental stress of the product under the design strength limit, so as to generate thermal stress and strain in the product. Through accelerated stress, potential defects in the product are exposed [potential defects in parts materials, process defects, and craftsmanship defects] to avoid failure of the product during use due to the test of environmental stress, resulting in unnecessary losses.