NRF24L01 2.4GHz Wireless Transceiver

The NRF24L01 is a compact, budget-friendly 2.4GHz wireless transceiver module widely used for short-range wireless communication between microcontrollers. Operating in the license-free 2.4GHz ISM band, it can both send and receive data, making it a versatile choice for wireless remote controls, RC vehicles, home automation, wireless sensor networks, and two-way communication between multiple Arduino or ESP32 boards. With 125 selectable channels, multiple modules can operate independently in the same area without interfering with one another.

This module communicates over SPI and supports configurable air data rates of 250Kbps, 1Mbps, or 2Mbps, giving you flexibility between transmission speed and range. It operates on a supply voltage of 1.9V to 3.6V, typically powered from a 3.3V source, while its SPI and I/O pins remain 5V tolerant, allowing direct connection to 5V microcontrollers like the Arduino Uno without needing a logic level converter. Built-in hardware CRC error detection and auto-retransmit features improve communication reliability, while its low power consumption, drawing around 11-14mA during transmission and receiving, makes it well suited for battery-powered projects.

Whether you’re building a wireless joystick controller, a sensor network, or a simple two-way messaging link between boards, the NRF24L01 offers dependable short-range wireless performance at an extremely low cost, making it a staple in maker and hobbyist electronics kits.

Specification:

• Frequency Band : 2.4GHz to 2.525GHz
• Communication Interface : SPI
• Data Rate : 250Kbps, 1Mbps, 2Mbps
• Operating Voltage : 1.9V to 3.6V
• Transmit Current : 11.3mA (Max)
• Receive Current : 13.5mA (Max)
• Communication Range : Up to 100m (Open Air)
• Number of Channels : 125