Feature: 1. Applicable Models: Auto key programmer emulator is replacement for Benz W202 W203 W208 W210 W211 W639, suitable for various models. 2. Main Function: ESL simulator is a replica circuit board, can be used to solve problems related to ESL electronic corner locks in car models. 3. Automatic Programming: The circuit board can be programmed automatically, and the code value can be automatically learned by rotating the key, so as to complete the matching of the key. 4. Simple to Operate: The ESL simulator is very easy to use, just follow the instructions to connect and complete, no tedious configuration and setup process. 5. High Toughness Material: The circuit board is made of ABS plastic material, compact, portable and can work stably for a long time. Specification: Item Type: Auto Key Programmer Emulator Material: ABS Description: This device works with replacement for Benz EIS. It emulates both of old (W202, 208, 210) and new (203, 208, 211, 639). ESL types functioning. You can use this emulator for testing of original. ESL or you can change damaged ESL to this emulator.. Package List: 1 x Auto Key Programmer Emulator