The D4005H004080 from Fujian MIcable is a Directional Coupler with Frequency 0.4 to 8 GHz, Coupling 40 dB, Coupling Variation ±1 dB, Amplitude Flatness ±1.4 dB, Directivity 14 dB. Tags: Module with Connectors. More details for D4005H004080 can be seen below.