Wireless RF Link Kit – 433MHz Transmitter & Receiver Set

Description

Description

The Wireless RF Link Kit – 433MHz Transmitter & Receiver Set is a cost-effective, easy-to-use wireless communication solution designed for microcontroller projects, remote control systems, and wireless data transmission applications. Operating in the 433MHz ISM (Industrial, Scientific, and Medical) band, this module pair enables reliable wireless communication between devices over distances of up to 100-300 meters in open areas, making it an ideal choice for projects where running wires is impractical or impossible .

The kit includes two separate modules: a transmitter and a receiver. The transmitter accepts digital data signals from a microcontroller or switch and transmits them over the air via ASK (Amplitude Shift Keying) or OOK (On-Off Keying) modulation . The receiver captures these signals and outputs the corresponding digital data, allowing the receiving microcontroller or circuit to act upon the information.

These modules are incredibly simple to use, requiring no complex configuration or frequency setup. They communicate via a straightforward logic-level serial data stream, making them compatible with virtually any microcontroller, including Arduino, ESP32, ESP8266, STM32, Raspberry Pi, PIC, and 8051 series devices . The transmitter and receiver are sold as a matched pair, pre-tuned to the same frequency for plug-and-play operation.

Key advantages of RF communication include:

• Penetration through walls – RF signals can pass through common building materials like drywall, brick, and wood, unlike IR (infrared) which requires line-of-sight

• Low power consumption – Suitable for battery-powered applications and portable devices

• Simple encoding/decoding – Can be used with software libraries like VirtualWire, RadioHead, or Manchester coding

• No line-of-sight required – Signals can travel around corners and through obstacles

• Cost-effective – One of the most affordable wireless solutions available

The transmitter and receiver modules come as bare boards with pin headers for easy breadboard or PCB integration. The receiver typically includes an onboard LED to indicate power and signal reception, and both modules feature an antenna pin for connecting a wire antenna (typically a 17-25cm straight wire for optimal performance at 433MHz) .

Whether you need to build a wireless remote control, a remote sensor monitoring system, a wireless doorbell, a garage door opener, a home automation controller, or a simple data link between two microcontrollers, this 433MHz RF Link Kit provides a simple, reliable, and affordable wireless solution.

Key Features

• 433MHz Operating Frequency – Operates in the license-free ISM band, no registration required for low-power applications

• ASK/OOK Modulation – Simple modulation scheme for easy integration with microcontrollers and logic circuits

• Long Transmission Range – Up to 100-300 meters in open areas (with proper antenna and line-of-sight)

• Low Power Consumption – Transmitter typically draws 3-12mA, receiver 3-5mA at 3-5V operation

• Wide Operating Voltage – Transmitter: 3V-12V DC; Receiver: 3V-5V DC (check specific module specifications)

• Simple Digital Interface – Single data pin for serial communication with any microcontroller or logic circuit

• Easy Antenna Connection – Onboard antenna pad for connecting a simple wire antenna (recommended length: 17-25cm)

• Compact Form Factor – Small module size for easy integration into portable devices and enclosures

• Compatible with Popular Libraries – Works with RadioHead, VirtualWire, and Manchester coding libraries

• Plug-and-Play Operation – No configuration or programming required; modules work as soon as power is applied

Technical Parameters