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The RF Link Receiver is a simple 434 MHz wireless receiver module designed for one-way data communication with a compatible 434 MHz transmitter. It fits easi...

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The RF Link Receiver is a simple 434 MHz wireless receiver module designed for one-way data communication with a compatible 434 MHz transmitter. It fits easily into a breadboard and pairs with microcontrollers to create basic wireless data links at up to 4800 bps.

As a receive-only module, it handles one-way communication. For bidirectional links, two transmitter/receiver pairs operating on different frequencies are required. The module receives on a common frequency without built-in device IDs, so a software filtering or encoding method (such as the VirtualWire library) is recommended for reliable communication.

Key Features

  • 434 MHz Operation – Compatible with 434 MHz RF Link transmitters
  • 4800 bps Data Rate – Suitable for basic telemetry and control signals
  • ~150 m Range – Up to approximately 150 m (500 ft) under ideal conditions
  • 5 V Supply – Standard logic-level power requirement
  • Breadboard Friendly – Pin spacing fits standard solderless breadboards

Specifications

  • Frequency – 434 MHz
  • Data Rate – 4800 bps
  • Supply Voltage – 5 V
  • Range – ~150 m (ideal conditions)
  • Communication – One-way (receive only)

Ideal For

  • Simple wireless data links and remote control
  • Sensor telemetry and monitoring
  • Learning RF communication with microcontrollers
  • Breadboard prototyping
Note: These receivers will pick up ambient noise on the 434 MHz band. Use a software encoding library such as VirtualWire to filter noise and ensure reliable data transfer.

Resources

Jargon buster

Plain-language definitions for the technical terms used above.

RF
RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.

RWS-371-6 433.92MHz RF Receiver Module Datasheet

Datasheet · 258.6 KB · Click any page to view full size

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KLP RF Link Walkthrough Tutorial

User Guide · 425.4 KB · Click any page to view full size

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Supplier page — sparkfun.com

Supplier Description · 517.2 KB · Click any page to view full size

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Related Tutorials

Free guides on learn.littlebird.com.au

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