The RFDC2G4G10S from RF-Lambda is a Directional Coupler with Frequency 2 to 4 GHz, Coupling 9.25 to 10.75 dB, Frequency Sensitivity ±0.5 to ±0.75 dB, Directivity 22 to 24 dB, Average Power 50 W. Tags: Module with Connectors. More details for RFDC2G4G10S can be seen below.