Usage Tips:[NRF24L01]is 2.4GHz band transceiver for , which has the abilities of auto-acknowledge and auto-retransmit and support up to six channels of data . [NRF24L01+ Module]High-performance wireless data transmission chip NRF24L01 +, an increase of high- PA and LNA , 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 . [Wireless Module]Small on SMD LED indicator; On-board 3.3V voltage regulator accepts your for +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, , 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: 2 * NRF24L01+PA+LNA Wireless Transceiver RF Transceiver Module 2 * Antenna Antenna 2.4G 1100m 2 * NRF24L01 Wireless Module Breakout Adapter Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.