The CS06-021-454 from Westell Technologies is a Cross Band Couplers with Frequency 696 to 2155 MHz, Frequency Band1 696 to 795 MHz, Frequency Band2 820 to 900 MHz / 1850 to 1990 MHz, Frequency Band3 1710 to 1755 MHz / 2110 to 2155 MHz, Insertion Loss Band1 0.3 dB. Tags: Module with Connector. More details for CS06-021-454 can be seen below.