Skip to main content

We use cookies to understand how you use our site and improve your experience. See our Privacy Policy.

RFM69HCW

Radio Transceiver Breakout

The RFM69HCW is a radio transceiver breakout from Adafruit. View the full RFM69HCW datasheet below including key specifications.

RFM69HCW shares its datasheet with RFM69HCW-433S2, whose page lists every part number it covers.

Official RFM69HCW datasheet (PDF) — the source this page was extracted from.

Manufacturer

Adafruit

RFM69HCW Key Specifications

ParameterValue
Rangeapprox. 500 m line of sight with wire antenna
Weight3.4 g
Frequency433 MHz
EncryptionAES-128
ModulationFSK
Output Power+13 dBm to +20 dBm (up to 100 mW)
Antenna OptionsWire antenna, uFL or SMA connector
Board Dimensions25.3mm x 29.3mm x 3.5mm
Transmit Current50 mA (+13 dBm) to 150 mA (+20 dBm)
Transceiver ChipsetSX1231
Communication InterfaceSPI
Receive/Listening Current~30 mA
Power/Logic Level Tolerance35V DC (on-board 3.3V regulator and level shifter)

RFM69HCW Overview

Part: RFM69HCW-433S2 — Adafruit

Type: Radio Transceiver Breakout

Description: A 433 MHz FSK packet radio breakout board based on the SX1231 module, offering +13 to +20 dBm power output, AES-128 encryption, and an SPI interface, capable of line-of-sight ranges up to 500 meters.

Operating Conditions:

  • Supply voltage: 3.3V (module); compatible with 3V or 5V logic
  • Operating temperature: null
  • Frequency: 433 MHz

Absolute Maximum Ratings:

  • Max supply voltage: 35V DC (breakout board input)
  • Max continuous current: null
  • Max junction/storage temperature: null

Key Specs:

  • Chipset: SX1231 based
  • Power Output: +13 to +20 dBm (up to 100 mW)
  • Transmit Current Draw: 50mA (+13 dBm) to 150mA (+20dBm)
  • Active Listening Current Draw: ~30mA
  • Line-of-sight Range: approx. 500 meters
  • Interface: SPI
  • Encryption: AES-128

Features:

  • Power output selectable in software
  • Create multipoint networks with individual node addresses
  • Packet radio with ready-to-go Arduino libraries
  • Uses the amateur or license-free ISM band
  • Supports simple wire antenna or spot for μFL or SMA radio connector
  • Integrated 3.3V voltage regulator and levelshifter

Applications:

  • Sensor node networks
  • Transmit data over a campus or town

Package:

  • Breakout board (25.3mm x 29.3mm x 3.5mm)

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
RFM69HCW-433S2AdafruitModule
RFM69HCW-900S2Adafruit—

Other RF / Wireless

All RF / Wireless datasheetsAll Adafruit datasheets (6)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

Ask your AI agent about the RFM69HCW

Connect SheetsData to Claude, Cursor, Codex or any MCP client and your agent reads this datasheet for you: pinout, limits, register maps and design checks, with the numbers taken from the PDF.

claude mcp add --transport http sheetsdata https://mcp.sheetsdata.com/mcp

Then ask: "Can the RFM69HCW run from my 12 V rail? Check it against the datasheet limits."

Create a free account $2 of usage every month, no card needed.