1. It can be used with NRF24L01 wireless module
2. Add core nRF24L01 Breakout Adapter with onboard 3.3V Regulator
3. Onboard 3.3V voltage regulator accepts your Arduino 5V supply and provides 3.3V for the attached nRF24L01 module
4. Allows for easy connection to nRF24L01 modules
5. Small power on SMD LED indicator

This 3.3V VCC Adapter Board for NRF24L01 Wireless Transceiver Module enables you to use NRF24l01 type transceivers on 5V systems like Arduino.

It regulates the 3.3V 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.