Specifications This module is made with SI4463 B1 wireless transceiver chip, ... Made with SI4463 B1 wireless transceiver chip, Silicon Labs branded. 3.Small sizeBasic Features:Ø Complete FSK, GFSK, MSK, OOK transceiverØ ... Wake-up Timer, Low Shutdown Current (30nA)Ø 1.8~3.6V Power SupplyØ Low Receive Current: 13mAØ Transmitting Current: ... Remote Metering FSK, GFSK, MSK, OOK Wireless Transceiver Module