Environmental test chambers are an essential tool for EMC/EMI testing labs, as they help to simulate various environmental conditions to test the performance of electronic devices under different situations. By subjecting devices to extreme temperature, humidity, and altitude conditions, test chambers can help identify potential problems that may arise when the device is exposed to different environments, making it possible to make design changes or improvements before the product goes to market. The controlled environment of the test chamber provides a reliable and repeatable testing platform, allowing for accurate and precise results. This helps EMC/EMI testing labs to ensure that their products comply with industry standards and regulations, making them safer and more reliable for end-users. In summary, environmental test chambers are a valuable asset for EMC/EMI testing labs, as they provide a controlled environment for testing and ensure that devices meet industry standards and regulations.