Si24R1 2.4GHz GFSK 2.4GHz ISM :GF.
Si24R1 - Ultra-low power high-performance 2.4GHz GFSK wireless transceiver
Si24R1 2.4GHz GFSK 2.4GHz ISM :GFSK/FSK :2Mbps/1Mbps/250Kbps :1uA :15uA :-83dBm @2Mbps :7dBm (2Mbps):15mA (2Mbps): 12mA(0dBm).