Features: With this test platform, for CAS4 CAS4 + key 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 CAS4 / CAS4 + on the car. Off-site key programming. It can also test whether CAS or key is working properly, which is the preferred platform for locksmith and automotive electronics. The wire is made of high quality material, with built-in start button, indicator light, very user-friendly design, and most importantly, high quality and low price. Update: This FOR CAS cannot be updated. Support System: No need to connect with computer, the instruction steps show How does FOR CAS Test Platform work? 1. Connect and test FOR CAS3 2. Connect and test FOR CAS2 3. Note: the red cable of CAS2 / CAS3 should be plugged into the first pin of socket. 4. After the 12V power is connected, the power light ON and the LED light of the CAS test platform will continuously fast flash once a second, it indicates the CAS CPU work well, if the LED light not ON, it indicates CAS is abnormal and need to repair or change. 5. Insert FOR key into CAS test platform mainframe and you will hear buzzer and see the CAS power adapter green indicator ON, it indicates the key and the CAS work well; otherwise it indicates the key is broken or the key doesn't program successfully. After FOR CAS test platform is connected with the full-new CAS3, the LED light will not ON, only after the EEPROM data is written into can the LED light on. FOR CAS Test Platform help you find out where is the fault: Connect FOR CAS test platform to CAS, and after connected with the power, the LED light on or not will help judge the where the fault is. Please make sure that our parts can fit your car. Material: plastic colour: black Package Contents: 1 x Test Platform Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.