Skip to main content

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

RFM69HCW-433S2

Radio Transceiver Breakout

The RFM69HCW-433S2 is a radio transceiver breakout from Adafruit. View the full RFM69HCW-433S2 datasheet below including key specifications.

Official RFM69HCW-433S2 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Adafruit

Category

Radio Transceiver Breakout

Package

Module, Breakout Board

RFM69HCW-433S2 Key Specifications

ParameterValue
EncryptionAES-128
Power Output+13 dBm to +20 dBm (up to 100 mW)
Estimated Rangeapprox. 500 meters (line of sight), up to 5 Km (with directional antennas)
Operating Frequency433 MHz
Receive Current Draw~30mA
Breakout Board Weight3.4g
Transmit Current Draw50mA (+13 dBm) to 150mA (+20dBm)
Communication InterfaceSPI
Module Operating Voltage3.3V (regulated by breakout board)
Breakout Board Dimensions25.3mm x 29.3mm x 3.5mm
Breakout Board Input Voltage Range3V to 35V DC (with onboard regulator)

RFM69HCW-433S2 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
RFM69HCWAdafruit—
RFM69HCW-900S2Adafruit—

More datasheets

All 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-433S2

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-433S2 run from my 12 V rail? Check it against the datasheet limits."

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