The CE16-0240 from Marki Microwave is a Bi-Directional Coupler with Frequency 2 to 40 GHz, Coupling 15.5 to 16.5 dB, Coupling Variation ±0.1 to 0.12 dB, Insertion Loss 0.43 to 1.15 dB, Directivity 16 to 30 dB. Tags: Module with Connectors. More details for CE16-0240 can be seen below.