The A100 series is a simple leak tester unit newly developed by our company. This instrument greatly reduces the size of the original leak test unit and integrates the highest-end differential pressure sensing element independently developed by our company and a new air leak tester. New road structure, small size, powerful function. After the standard Modbus protocol communicates with the upper computer of the automation equipment through RS485 or Ethernet, the real-time control of the leakage test unit can be realized. The test parameters, leakage values, and signal feedback are all available. The test efficiency, accuracy and stability have reached the world advanced level. This high-performance and low-cost product is ideal for leak test automation equipment integrators.