The RF3404E from Murata is a Band Pass Filter with Frequency 433.32 to 434.52 MHz, Bandwidth 0.6 MHz, Center Frequency 433.92 MHz, Insertion Loss 2.3 to 3.5 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF3404E can be seen below.