LT8900 2.4GHz transceiver module is very low cost and seem to have low power consumption.
It seem almost similar to nRF24L01. Do you have any idea how to wiring and drive this module with Raspberry Pi?
Hope there is c++ class library for Pi. So far, there is an arduino lib available at https://bitbucket.org/robvanderveer/lt8900lib for the comparison.
Any help will be much appreciated....