SonoffLAN vs Tasmota: which is better for Home Assistant?

SonoffLAN is easier since it works with stock firmware and offers dual protocol support, but Tasmota provides more control with local-only operation and custom features. Choose based on whether you value convenience over customization.

How to set up SonoffLAN for local-only mode?

Set mode to 'local' in the integration UI, but note it requires eWeLink credentials for device keys and may have stability issues. Ensure your network supports multicast, and consider auto mode for better reliability with cloud fallback.

Why do my Sonoff devices keep going unavailable in SonoffLAN?

This is often due to multicast DNS problems. Check your network setup, avoid NAT in virtual machines, and use the auto mode to leverage cloud connections as a backup, as recommended in the README.

Can SonoffLAN work without an internet connection?

Yes, in local mode with cached device data, but initial setup requires cloud login to fetch encryption keys. Some sensors, like power monitors, may not update without cloud after 2026.

How to configure the Sonoff RF Bridge with SonoffLAN?

Use YAML configuration to map RF signals to sensors or buttons, specifying device_class and timeout. Examples in the README show how to handle single-state or dual-state sensors for automation.

Is SonoffLAN secure for local control?

It uses encryption keys from eWeLink for local communication, but DIY mode is unencrypted. For best security, use auto mode with cloud credentials, and avoid exposing devices on untrusted networks.

Open-Awesome

Sonoff LAN

MITPythonv3.12.2

A Home Assistant custom component to control Sonoff smart devices with original eWeLink firmware over LAN and/or cloud.

GitHub

3.3k stars463 forks0 contributors

What is Sonoff LAN?

SonoffLAN is a custom integration for Home Assistant that allows users to control Sonoff smart devices—like switches, sensors, and power monitors—directly from their home automation setup. It connects to devices using their original eWeLink firmware over local network (LAN) and/or cloud, solving the problem of vendor lock-in without requiring firmware modifications.

Target Audience

Home Assistant users who own Sonoff devices and want to integrate them into their local smart home ecosystem while retaining stock firmware features.

Value Proposition

Developers choose SonoffLAN because it provides reliable, dual-protocol access to Sonoff hardware without the complexity and risk of flashing custom firmware, offering seamless integration with Home Assistant's automation capabilities.

Overview

Control Sonoff Devices with eWeLink (original) firmware over LAN and/or Cloud from Home Assistant

Use Cases

Best For

Integrating Sonoff switches and sensors into Home Assistant without firmware replacement
Controlling smart devices locally to reduce cloud dependency and improve response times
Monitoring power consumption and energy usage with Sonoff Pow devices
Automating RF-based sensors and remotes via the Sonoff RF Bridge
Managing multi-account or multi-home eWeLink setups within a single Home Assistant instance
Creating custom device mappings (e.g., treating a switch as a light or fan) in home automation

Not Ideal For

Environments with unreliable multicast DNS (mDNS/zeroconf) where local device discovery frequently fails
Projects requiring real-time, cloud-free updates for power, current, and voltage sensors beyond 2026
Users who need 100% stable local control without any cloud fallback for critical automations

Pros & Cons

Pros

Dual Protocol Reliability

Simultaneously uses LAN and cloud connections, with auto mode switching for fallback, ensuring device availability even when local networks are unstable.

No Firmware Flashing

Works with stock eWeLink firmware, eliminating the risk and effort of installing custom firmware like Tasmota while retaining manufacturer features.

Broad Device Support

Controls a wide range of Sonoff devices, including switches, power monitors, temperature sensors, RF bridges, and cameras, as documented in DEVICES.md.

Real-Time State Updates

Provides instant device status changes through local multicast or cloud WebSocket connections, enabling responsive home automation.

Cons

Local Protocol Instability

The README admits that local connections can be unreliable, with devices sometimes disappearing from the network or failing to respond, requiring cloud fallback.

Cloud Sensor Limitations

Starting in 2026, power sensors won't update via cloud, and some devices like THR316D/THR320D require cloud for thermostat control, limiting offline functionality.

Complex Network Setup

Requires proper multicast (mDNS/zeroconf) configuration, which can be problematic in Docker, VMs, or with certain routers, as highlighted in common issues.

Frequently Asked Questions

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