nRF24L01 Module

 NRF24L01 2.4GHz Wireless Transceiver
    2Mbit/s, 1Mbit/s, 250Kbit/s, three selectable transmission rate.
    MultiCeiver hardware and six receiver functions.
    2 Mbit/s make high-quality VoIP is possible.
    +/- 60 ppm crystal.
    Only require an external inductor in the antenna matching
    There is no need multi-layer PCB.
    5V tolerance level inputs.
    Improved ShockBurst and the serial interface can be easy to connect with a variety of low-cost MCU.
    There si no need SPI interface with the MCU.
    Received in the rate of 2Mbit/s, the peak current is 12.5mA.
    When the rate of 2Mbit/s @ 0dBm output,the peak current is 11mA.
    Power-down mode, power consumption is 400nA.
    Standby mode, power consumption is 32uA.
    130us fast switching and wake time.
    With voltage regulator:Oltage regulators on board.
    Built-in 2.4GHz antenna,support up to six channels of data reception.
    Low operating voltage: 1.9-3.6V
    Small size:15*29mm

  data sheet