Hello @pavel_kristof,
Hope you are doing well.
The OM6716,599 is our Transponder Evaluation and Development Kit 2 base station that supports the LF transponder.
OM 6716/434,599 is the optional RF extension board for RKE/PKE, Supports the 434 MHz UHF frequency band as transmitter and receiver. The OM6716/434 must be added in the housing of the TED-Kit 2 main board (OM6716,599).
Regards,
Eduardo.