The ZCDC16-02263-S+ from Mini Circuits is a Directional Coupler with Frequency 2 to 26.5 GHz, Coupling 16 dB, Coupling Variation ±1.2 dB, Directivity 13 to 31 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZCDC16-02263-S+ can be seen below.