BE Key Pro V3.2 Yellow Board 315MHz/433MHz for MB Smart Key Applications Compatible with various Mercedes-Benz key programmers including Autel IM608, CGDI MB, Key Tool Plus, Digimaster-III, CKM100, AK500, MBE MB-KEY OBD2, NEC-57 MB-PRO, and others Supports lock, unlock, and trunk functions when used as a smart key Applicable chip models: 705 Moto (19972000), NEC (20012005), NEC (20062010), BGA (after 2011) Frequency selection options: - Switch between 315MHz and 433.92MHz using an SMD resistor (1K resistor installed = 315MHz; removed = 433.92MHz) - Alternatively, change frequency via MB programming tool Key Features: - Reusable design can be reset and reprogrammed - Stable performance with selectable frequencies - High compatibility with multiple systems - Digital signature support - Built-in rolling code algorithm with improved reliability - Pre-roll algorithm for enhanced HASH value processing - Automotive-grade quartz crystal for improved infrared communication stability - Enhanced infrared signal strength upon button press - Supports dual RF signal transmission (press and release) for improved response Improvements over previous versions: - Resolves EIS data synchronization issues on W164/W639 models - Fixes ignition activation problems after repeated attempts - Corrects trunk remote opening functionality - Upgraded RF signal transmission from single to dual pulse - Refined rolling code algorithm for better accuracy Note: When frequency is set via MB tool, the SMD resistor method will be disabled. To revert to resistor-based switching, first erase the frequency setting using the MB tool. Package Includes: 1 x BE Key Pro Yellow Version 1 x Smart Key Shell