The Wifi4S2452-9 from Anatech Electronics is a Band Pass Filter with Frequency 2.44 to 2.47 GHz, Bandwidth 30 MHz, Center Frequency 2452 MHz, Upper Rejection 45 dB @ 2502 MHz, Lower Rejection 45 dB @ 2402 MHz. Tags: Module with Connectors, Cavity Filter. More details for Wifi4S2452-9 can be seen below.