The DC2000500275GN from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 0.5 to 2.75 GHz, Coupling 20 dB, Coupling Variation ±1 dB, Frequency Sensitivity ±0.8 dB, Directivity 20 dB. Tags: Module with Connectors. More details for DC2000500275GN can be seen below.