315MHz RF Transmitter & Receiver Wireless Module

The 315 MHz RF Transmitter and Receiver Wireless Module is a bare ASK modulation RF pair operating at 315MHz with a transmitter accepting 3V to 12V DC and a receiver requiring 5V DC, with a maximum data rate of 4.8kbps and transmission distance from 20 to 200 meters depending on transmitter supply voltage and antenna length. The rf transmitter and receiver module exposes three pins on each board — DATA, VCC, and GND — providing a direct interface to microcontroller digital pins without any SPI, I2C, or UART protocol configuration required.

The 315mhz rf module pair functions as a raw OOK/ASK radio link — the transmitter modulates the DATA pin state onto the 315MHz carrier and the receiver demodulates it back to a digital signal. This means the 315mhz wireless module datasheet confirms that a software encoding library such as VirtualWire or RadioHead is required on the microcontroller side to package data into structured packets with preambles and checksums. Without encoding, raw digital transitions on the DATA pin produce unreliable reception due to DC bias drift on the ASK receiver. One practical trade-off: the 315MHz band is not the ISM band used in India for unlicensed short-range devices — 433MHz is the standard Indian ISM band allocation. Verify local regulatory compliance before deploying 315MHz RF modules in commercial or public-facing products.

The non-obvious advantage of the bare 315mhz rf transmitter receiver module pair over integrated relay kits is full data flexibility — any sensor reading, command byte, or encoded message can be transmitted, enabling multi-sensor, multi-command RF builds that a fixed relay remote cannot support. Available from StemVolt, this module is suited for engineers building custom RF data links and practical embedded wireless electronics projects.

Related Products:

• Checkout the 433MHz RF Transmitter & Receiver Wireless Module

Features:

• 315 MHz ASK OOK modulation for simple Arduino MCU RF data link
• Transmitter 3V to 12V range increases distance with higher supply voltage
• Up to 200-meter range with 12V transmitter and antenna in open area
• Three-pin DATA VCC GND interface on both transmitter and receiver boards
• Compatible with VirtualWire and RadioHead Arduino RF encoding libraries

Technical specifications:

 Applications:

• 315 MHz RF Module used for Arduino wireless sensor data transmission build
• College project uses 315 mhz rf module for remote digital sensor link
• RF alarm system uses 315mhz rf transmitter receiver module for trigger signal
• Custom RF remote uses rf transmitter and receiver module for MCU command
• Multi-sensor node uses 315mhz wireless module for encoded data uplink build

Package includes:

• 1 x 315 MHz RF Transmitter & Receiver Wireless Module