nRF24L01 for communication 1 way and 2 way - Hackster.io
How To Build an Arduino Wireless Network with Multiple NRF24L01 Modules - YouTube
2.4G ISM Band GFSK FSK Wireless Transceiver USB/TTL Module With IPEX Antenna For Arduino UNO MEGA2560 Raspberry Pi STM32 FPGA - Buy 2.4G ISM Band GFSK FSK Wireless Transceiver USB/TTL Module With
Amazon.com: Solu CC1101 Wireless Transceiver Module with spring Antenna for Arduino// Wireless RF Transceiver 315/433/868/915MHZ + spring Antenna Wireless Module
Wireless Communication Between Two Arduinos - Circuit Basics