The MP02981 from Golledge is a SAW Resonator with Frequency 455.900 to 456.100 MHz, Centre Frequency 456 MHz, Insertion Loss 1.6 to 2.5 dB, Voltage 12 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, SAW Resonator. More details for MP02981 can be seen below.