315MHz RF Wireless Transmitter & Receiver Module Kit

Description

Description

The 315MHz RF Wireless Transmitter & Receiver Module Kit 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 315MHz ISM (Industrial, Scientific, and Medical) band, this module pair enables reliable wireless communication between devices over distances of up to 100 meters or more 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. The modules are designed to work as a matched pair, pre-tuned to the same frequency for plug-and-play operation.

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 accepts a wide input voltage range of 3V to 12V, with higher voltages providing greater transmission power and range.

Key advantages of 315MHz RF communication include:

• Penetration through walls – RF signals can pass through common building materials like drywall, brick, and wood

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

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

• 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 modules feature an antenna pin for connecting a wire antenna (typically a 17-23cm straight wire for optimal performance at 315MHz).

Regulatory Note: 315MHz is a commonly used frequency in North America for low-power devices. If you are outside North America, please check your local regulations before use.

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 315MHz RF Link Kit provides a simple, reliable, and affordable wireless solution.

Key Features

• 315MHz Operating Frequency – Operates in the ISM band commonly used in North America for remote control applications

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

• Long Transmission Range – Up to 50-100 meters or more in open areas (depending on antenna and conditions)

• Wide Transmitter Voltage Range – Transmitter operates from 3V to 12V DC (higher voltage = greater transmission power)

• Low Receiver Current – Receiver typically draws only 6-7mA at 3V-5V operation

• High Receiver Sensitivity – Typical sensitivity of -110dBm to -112dBm for reliable reception

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

• Easy Antenna Connection – Onboard antenna pad for connecting a simple wire antenna (recommended length: 17-23cm)

• 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

Technical Parameters