This is the latest 2.4GHz RF transceiver modules that is built in the nRF24L01+ IC from Nordic Semiconductor. It has many new features such as extra pipelines, buffers. Compatible with the original nRF24L01 module. Features: *Built in nRF24L01+ transceiver IC *Data rate up to 2Mbps *1.9-3.6V Power Input *Built in antenna *Low Supply Current *Auto Acknowledge *Auto Re-transmit *Multiceiver-6 Data Pipes *5V tolerant input *2x4 2.54mm header *Mini Size *Dimensions:29mm x 15.2mm