The AE2450NS2197 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 2.4 to 2.5 GHz, Bandwidth 100 MHz, Insertion Loss 3 dB, Rejection 50 dB, Return Loss 12 dB. Tags: Module with Connectors, Notch Filter. More details for AE2450NS2197 can be seen below.