1Operation: With this test platform, the CAS4 can be programmed on the workbench by OBD without opening the machine cover, thus avoiding car power loss and data loss caused by long time unlocking of the CAS 2Function: When making keys, for F series FEM BDC, you need to preprocess the IMMO box. Using our test platform can be completed on the bench, It's both easy operation and convenient. 3Durable Material: The shell is made of ABS material, has high strength and good toughness. It is a great helper of key programming, and basic diagnosis. 4Humanized Configuration: Adopts high quality wire, with built in start button, indicator, IMMO box indicator, user friendly design, convenient and practical. 5Wide Application: CAS4 test platform can also test whether CAS or key is working properly, which is the preferred platform for locksmith and automotive electronics.