The RF1401D from Murata is a Band Pass Filter with Frequency 432.92 to 434.92 MHz, Bandwidth 1 MHz, Center Frequency 433.92 MHz, Insertion Loss 2.8 to 3.8 dB, Power 0.01 W. Tags: Surface Mount, Ceramic, Surface Mount, RF SAW Filter, Ceramic Filter. More details for RF1401D can be seen below.