Addicore 2 Pack nRF24L01+ Breakout Adapter with On-board 3.3V Regulator Includes: 2 nRF24L01+ breakout adapters with on-board 3.3V regulator, information card, and reclosable clear plastic bag Arduino and Raspberry Pi compatible Allows for easy connection to nRF24L01+, nRF24L01+PA+LNA modules On-board 3.3V voltage regulator accepts your Arduino +5V supply and provides 3.3V for the attached nRF24L01+ module Small power on SMD LED indicator