The nRF24L01 module is the latest in RF modules. This module uses the 2.4GHz transceiver based on the Nordic Semiconductor, the nRF24L01+. This transceiver IC operates in the 2.4GHz band and has many new features! Take all the coolness of the nRF2401A and add in some extra pipelines, buffers, and an auto-retransmit feature, and you have the nRF24L01+.
The mini size NRF24 (TW) wireless board, 12*18mm, orignal nordic NRF24L01 compatible, all the same way of use, the only two differences with original one are: NRF24 can provide higher transmission power up to 7dbm (0dbm original) but same power computation on same transmission power level.