The AL-900 series air leak tester as a high-precision leak testing instrument brings together more than 30 years of experience and technology accumulation in the leak tester industry. The new air path structure and software algorithm optimization greatly improve its test efficiency and accuracy, and can greatly meet various complex air tightness test requirements. Calibration, scanning, communication, data management and other functions are all available.In the meanwhile, it is a high-end leak test instrument that can be perfectly integrated with modern smart factories.