Updated: Jul 2, 2021
This tutorial to learn, One of the easiest and cheapest ways to implement wireless communication is using RF Module (Radio Frequency Module). The transmitter circuit is built encoder HT12E Module , 433MHz RF transmitter module (TX) and a few discrete components. The receiver circuit is built around Arduino UNO board, decoder HT12D Module, 433MHz RF receiver module (RX), 4 LED and a few discrete components.
433 MHz RF Transmitter and Receiver Module
HT12D Decoder Module
Push Buttons (4 Nos)
LEDs (4 Nos)
433MHz RF Transmitter and Receiver Module: