The C2-A41 from RD Microwaves is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 2.4 to 2.8 GHz, Average Power 1000 W, Insertion Loss 0.03 to 0.07 dB. Tags: Module with Connectors. More details for C2-A41 can be seen below.