The ZDC-10-1+ from Mini Circuits is a Directional Coupler with Frequency 0.5 to 500 MHz, Coupling 11.44 to 11.85 dB, Directivity 20.87 to 51.25 dB, Power 1.5 to 3, Average Power 1.5 to 3. Tags: Module with Connectors. More details for ZDC-10-1+ can be seen below.