The RF3701E from Murata is a Band Pass Filter with Frequency 433.27 to 434.57 MHz, Bandwidth 0.65 MHz, Center Frequency 433.92 MHz, Insertion Loss 2.5 to 3.2 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF3701E can be seen below.