This 5V-3.3V VCC Adapter Board for NRF24L01 Wireless Module enables you to use NRF24L01 type transceivers on 5V systems like Arduino.
It regulates the 5V input to 1.9~3.6V DC and incorporates bypass capacitors for reliable operation. The NRF24L01 utilizes Enhanced ShockBurst (ESB) protocol to support two-way data packet communication with packet buffering, packet acknowledgement and automatic re-transmission of lost packets.