The CPL10F2P-4321-S5S5 from ETL Systems is a Proximity Coupler with Frequency 50 to 200 MHz, Coupling 10 dB, Insertion Loss 1.5 to 1.8 dB, Average Power 0.04 W, Operating Temperature 0 to 45 Degree C. Tags: Module with Connectors, Proximity Coupler. More details for CPL10F2P-4321-S5S5 can be seen below.