Wireless Connection in Microcontrollers Using nRF24L01

nRF24L01 radio transceiver provides very efficient and inexpensive way to establish communication.

Exploring Wireless: Getting Started with nRF24L01 Modules

NRF24L01 Wireless Module Board 8 Pin Receiver Transmitter Microcontroller 2.4GHz Antenna Socket Adapter Plate Board for Arduino - AliExpress

Nettigo: nRF24L01+ compatible module - wireless communication for Arduino

Arduino NRF24L01+ 2.4GHz Wireless RF Transceiver Adapter Module Board

NRF24L01 Tutorial - Arduino Wireless Communication

NRF24L01 Tutorial - Arduino Wireless Communication, Arduino

Wireless Connection Between Micro Controllers Using nRF24L01

Wireless Communication with Arduino and nRF24L01

wireless communication - General Electronics - Arduino Forum