The DDP0410R912-957P006-006 from Zhejiang Jiakang Electronics is a RF Duplexer with Frequency 909 to 915 MHz / 954 to 960 MHz, Band 1 909 to 915 MHz, Band 2 954 to 960 MHz, Power 5 W, Insertion Loss 2.5 dB. Tags: PCB. More details for DDP0410R912-957P006-006 can be seen below.