---
id: rflink
version: "0.0.68"
license: MIT
license_treatment: permissive
maintenance: active
---

# rflink — Library and CLI tools for interacting with RFlink 433MHz transceiver.

License: permissive · Maintenance: active · Downloads: 74.4K/mo

## What it is and what it does

rflink is a Python library and CLI tool for controlling RFlink 433MHz RF transceivers, commonly used in home automation and domotica setups. It decodes wireless sensor and device packets (temperature, humidity, switch states) and sends commands to RF devices. The library wraps serial or TCP communication with the RFlink hardware, parsing its protocol into structured events; the CLI provides interactive debugging and device control, while a proxy utility allows a single RFlink device to serve multiple clients (e.g., Home Assistant and Domoticz simultaneously).

The package is built on async I/O (pyserial-asyncio-fast, async_timeout) and command-line parsing (docopt), making it suitable for integration into larger automation frameworks or standalone use. It is primarily maintained for Home Assistant's RFlink component but can be used independently for any application needing to interact with RFlink hardware.

Use it for:

- Integrate RFlink 433MHz sensors and switches into a Home Assistant automation system.
- Debug and monitor RF packets from wireless devices connected to an RFlink gateway.
- Share a single RFlink device across multiple home automation platforms (Home Assistant, Domoticz) via the proxy.
- Send RF commands to control wireless switches and dimmers from Python scripts.
- Capture and decode 433MHz sensor data (temperature, humidity, battery status) for logging or analysis.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Library and command-line interface for communicating with RFlink 433MHz transceiver hardware, supporting both serial and TCP connections.

Yes, if you own RFlink hardware and need to integrate it with Home Assistant or another Python-based automation system. The library is actively maintained, has no known vulnerabilities, and low install friction. Not relevant if you do not have RFlink hardware or use a different RF protocol.

## Install

pip install rflink
uv add rflink
poetry add rflink

## Installing rflink

Before you install: Low install friction with a pure-Python wheel. Active maintenance with a recent commit on 2026-03-17 and 150 days since last release. Depends on pyserial, pyserial-asyncio-fast, docopt, and async_timeout—all standard async/serial libraries.

License in practice: MIT license (permissive) places no restrictions on use, modification, or distribution in commercial or private projects.

Quickstart:

pip install rflink

from rflink.protocol import RFLinkProtocol
import asyncio

# Or use the CLI:
# rflink -p /dev/ttyACM0
# rflink on newkaku_0000_1

Requires a physical RFlink 433MHz transceiver connected via serial port or TCP, and Python 3.6 or higher.

Verify before relying:

- Whether pyserial-asyncio-fast is a maintained fork or drop-in replacement for pyserial-asyncio.
- Current Python version support beyond the classifiers listed (3.6–3.9).
- Whether the proxy CLI (rflinkproxy) is production-ready or remains experimental.

## Package facts

- License: MIT (permissive)
- Python support: unspecified
- Install friction: low
- Maintenance: active
- Downloads: 74.4K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

rflink 433mhz transceiver, home automation rf receiver, domotica wireless protocol, serial port rf gateway, 433mhz device control, home-automation, rf-protocol, asyncio

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