RF Transmitter and Receiver Module 433MHz

The 433MHz RF Transmitter and Receiver Module is a compact wireless communication module designed for reliable short-range data transmission between electronic devices. Operating in the 433MHz ISM (Industrial, Scientific, and Medical) frequency band, the module enables wireless communication without the need for Wi-Fi or Bluetooth, making it ideal for remote control systems, home automation, sensor networks, and embedded electronics projects.

The module consists of two separate units: a 433MHz RF Transmitter (Tx) and a 433MHz RF Receiver (Rx). The transmitter converts digital data from a microcontroller into a 433MHz radio frequency signal using Amplitude Shift Keying (ASK) modulation, while the receiver detects and demodulates the signal to reproduce the original digital data. This simple and efficient communication method allows wireless data exchange between compatible transmitter and receiver modules.

The RF Transmitter operates from 3V to 12V DC, while the RF Receiver operates from 5V DC, providing flexibility for a variety of electronic applications. The module supports communication over distances of approximately 20 to 100 meters under normal operating conditions. The actual transmission range depends on the antenna used, power supply quality, surrounding obstacles, and environmental interference.

Designed for easy integration, the 433MHz RF Transmitter and Receiver Module is fully compatible with Arduino, ESP32, ESP8266, Raspberry Pi (through GPIO), STM32, PIC, AVR, 8051, NodeMCU, and other microcontroller platforms. It supports widely used communication libraries such as RadioHead, VirtualWire, and RC-Switch, making wireless communication simple to implement in embedded applications.

The module is widely used in wireless remote controls, home automation systems, wireless sensor networks, remote switching, security systems, wireless alarms, industrial monitoring, robotics, IoT projects, educational STEM projects, and DIY electronics.

Features

• Operating frequency: 433MHz ISM band

• Includes 1 × RF Transmitter and 1 × RF Receiver

• ASK (Amplitude Shift Keying) modulation

• Transmitter operating voltage: 3V–12V DC

• Receiver operating voltage: 5V DC

• Reliable wireless digital data transmission

• Typical communication range: 20–100 meters (depending on antenna and environment)

• Low power consumption

• Compact and lightweight design

• Easy interfacing with microcontrollers

• Compatible with RadioHead, VirtualWire, and RC-Switch libraries

• Stable and reliable wireless communication

Applications

• Wireless remote controls

• Home automation systems

• Wireless sensor networks

• Remote switching

• Security and alarm systems

• Industrial monitoring

• Robotics and automation

• Arduino and ESP32 projects

• Raspberry Pi wireless communication

• IoT devices

• Educational STEM projects

• Laboratory experiments

• Embedded system development

• DIY electronics

Package Includes

• 1 × 433MHz RF Transmitter Module

• 1 × 433MHz RF Receiver Module