Environmental test chambers are widely used in the electronics industry to reduce the risk of product failure and to speed up time to the market. Tests are fundamental for ensuring that products have a long service life, maintaining their initial performance. The reliability and quality of circuit boards(PCB) and electronic components are essential requirements that all manufacturers must monitor in both the R&D and production stages, with the aimed at detecting and replacing all defective parts. The tests can simulate the normal operating environment of the product in order to identify design errors or defective components, such as: weak welds, container defects, poor chip adhesion. Stress screening tests accelerate the life of the product in order to forcefully induce the arising of latent defects, production errors and design defects of products. Electronics environmental reliability testing needs to meet a variety of industry standards, such as IEC, MIL-STD, JEDEC and other related standards.