The CPL10L1P-4303-N5N5 from ETL Systems is a Proximity Coupler with Frequency 850 MHz to 2150 MHz, Coupling 10 dB, Insertion Loss 1.5, Average Power 37 W, Operating Temperature 0 to 45°C. Tags: Module with Connectors, Proximity Coupler. More details for CPL10L1P-4303-N5N5 can be seen below.