[NRF24L01]is 2.4GHz ISM band transceiver for arduino, which has the abilities of auto-acknowledge and auto-retransmit and support up to six channels of data reception. [NRF24L01+ Module]High-performance wireless data transmission chip NRF24L01 +, an increase of high-power PA and LNA chips, RF switches, band-pass filters and other professional full bidirectional RF, making the effective communication distance has been greatly expanded. [NRF24L01]The module has 5V tolerant inputs which allows for direct connection of SPI pins to the for Arduino. [Wireless Module]Small power on SMD LED indicator; On-board 3.3V voltage regulator accepts your for Arduino +5V supply and provides 3.3V for the attached "nRF24L01+" module. [Widly Applications]It can be wildly used to wireless remote control, somatosensory devices, RFID, NFC, smart grid, smart home, wireless audio etc. specification: PA Gain:20dB LNA Gain:10dB Frequence: 2.4GHz~2.5GHz Range: 800+ meters line of sight Multi-frequency: 125 frequency Transmit Operating Current(Max):115mA Receiving Operating Current(Max):45mA Operating Voltage: 3 ~ 3.6V (Recommended 3.3V) Colour:black Material:Plastic + Metal Package Contents: 4 x NRF24L01+PA+LNA Wireless Transceiver RF Transceiver Module 4 x SMA Antenna SMA Antenna 2.4G 1100m 4 x NRF24L01 Wireless Module Breakout Adapter