Smart key 4 button 315Mhz PCF7945 / PCF7953 chip. Chip: PCF7945 / PCF7953. for BMW 3 5 7 F series CAS4+/ FEM systems. BMW 3 5 7 F series CAS4+/ FEM systems. Frequency: 315mhz.

Smart key 4 button 433Mhz/315mhz ID49-PCF7945/PCF7953 chip for 2014-2019 BMW X5 X6 3 Series 5 Series. CHIP: ID49. work on: 2014-2019 BMW X5 X6 3 Series 5 Series. Buttons: Lock, Unlock, Trunk,Panic.