Peugeot PU-9664A radio code please help!?

I have a Peugeot PU-9833A radio. The battery of my car has been changed, and I not have radio code for it. (display SECURITY messages). If I keep pushed the BND button, then turn on the radio, it’s a beep sound in the speaker, end the radio starting on, but only for 3 min, then again appear the SECURITY messages
So from the serial code can anyone tell me the code? I should be getting please?

PEUGEOT PU-9664A
CL0103S0031202
286-7817-01

Any Ideas on the radio code or how to get it?