Hello,Tomas.
Thank you very much for your reply and recommendation.
Yes, I will touch with RFbeam company.
Thank you again.
For MR2001, I think MR2001 is better than TEF810X for my project.
This is because MR2001 has IF output which can be used widely in my project.
So, I am studying MR2001 chip set.
By the way, I found out that MR2001V (VCO) has some commands such as 0x21, 0x22, 0x23 and so on.
And, these commands are not in the datasheet which I downloaded from NXP page.
So, I hope you let me know its detailed data.
Thank you for your looking.
Best regards.