TI CC1101 chip

The CC1101 is a low-cost, sub-1 GHz transceiver designed for ultra-low power wireless applications. The circuit is primarily intended for use in the ISM (Industrial, Scientific, and Medical) and SRD (Short Range Device) bands at 315, 433, 868, and 915 MHz, but can be easily programmed to operate at other frequencies in the 300-348 MHz, 387-464 MHz, and 779-928 MHz bands.