The ZCDC20-01263-S+ from Mini Circuits is a Directional Coupler with Frequency 1 to 26.5 GHz, Coupling 20 dB, Directivity 13.5 to 31 dB, Power 20 W, Average Power 20 W. Tags: Module with Connectors. More details for ZCDC20-01263-S+ can be seen below.