The BC-2000-20S from UMCC is a Bi-Directional Coupler with Frequency 10 MHz to 2 GHz, Coupling 20 dB, Coupling Variation ± 1.5 dB, Average Power 1 W, Insertion Loss 2.2 dB. Tags: Module with Connectors. More details for BC-2000-20S can be seen below.