The SX1211 is a low cost single-chip transceiver operating in the frequency ranges from 863-870, 902-928 MHz and 950-960 MHz. The SX1211 is optimized for very low power consumption (3mA in receiver mode).
Datasheet note:
Link to the SX1211 datasheet on our website:
http://www.semtech.com/products/SX1211
