The ZDC20S-0.5-6-30A from ZTS Technologies is a Directional Coupler with Frequency 500 MHz to 6 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Directivity 12 dB, Average Power 30 Watts. Tags: Module with Connectors. More details for ZDC20S-0.5-6-30A can be seen below.