Siemens P1X3456789 AUT 5 KJ-J0923-0430 Regulator Unit 00116140-02 is an industrial regulator unit. It is a part of the Siemens AUT 5 series and has the model number KJ-J0923-0430. This unit is designed for controlling and regulating specific functions within an electrical system, helping to ensure efficient and precise operation.