The CPL10L1P-4303-S5S5 from ETL Systems is a Proximity Coupler with Frequency 850 MHz to 2150 MHz, Coupling 10 dB, Insertion Loss 1 to 1.5 dB, Average Power +37 dBm (5W), Operating Temperature 0 to 45°C. Tags: Module with Connectors, Proximity Coupler. More details for CPL10L1P-4303-S5S5 can be seen below.