The OH-T-5400-10 from A-Info is a Directional Coupler with Frequency 0.5 to 40.0 GHz, Coupling 10 dB, Coupling Variation ±1.50 dB, Directivity 11 dB, Insertion Loss 2.9 dB. Tags: Module with Connectors. More details for OH-T-5400-10 can be seen below.