Specifications This module is made with SI4463 B1 wireless transceiver chip,Silicon Labs ... Ø Receiver Bandwidth: 10.6~230.4KHzØ Using Six I / 0 (SDI,SDO,SCK,NSEL,NIRQ,SDN)Ø SPI Compatible Control InterfaceØ Low ... Control and Remote Metering FSK, GFSK, MSK, OOK Wireless Transceiver Module