The CPL10L1P-4305-B5B5 from ETL Systems is a Proximity Coupler with Frequency 850 MHz to 2.15 GHz, Coupling 10 dB, Insertion Loss 1 to 1.5 dB, Average Power 5 W, Operating Temperature 0 to 45 Degree C. Tags: Module with Connectors, Proximity Coupler. More details for CPL10L1P-4305-B5B5 can be seen below.