nRF24L01 2.4GHz Wireless Module

Overview

The nRF24L01 is a highly popular 2.4GHz wireless transceiver module based on the Nordic Semiconductor nRF24L01+ chip. It provides a simple SPI interface for connecting to microcontrollers like Arduino, ESP32, STM32, and Raspberry Pi, making it one of the most widely used modules for building wireless sensor networks and remote control systems.

The module operates in the 2.4–2.525GHz ISM band with 126 selectable RF channels, supporting data rates of 250kbps, 1Mbps, and 2Mbps. The Enhanced ShockBurst protocol provides automatic packet handling, CRC checking, and auto-retransmit, significantly simplifying wireless communication code. With up to 100 meters of open-air range (and more with the PA+LNA variant), it is ideal for home automation sensors, remote controls, and data telemetry.

The module requires only 1.9–3.6V supply voltage and consumes just 13.5mA during transmission, making it suitable for battery-powered sensor nodes. The 8-pin header provides easy breadboard and PCB integration.

What's in the Box

• 1x nRF24L01 wireless transceiver module
• 8-pin header (2x4, 2.54mm pitch)

Pinout

Pin	Function
VCC	1.9–3.6V power supply
GND	Ground
CE	Chip Enable (active high)
CSN	SPI Chip Select (active low)
SCK	SPI Clock
MOSI	SPI Master Out Slave In
MISO	SPI Master In Slave Out
IRQ	Interrupt (active low, optional)