SONOFF TX EU Wi-Fi Smart Wall Switch

Available in 1-gang (T3EU1C) or 3-gang (T3EU3C) versions, this Wi-Fi touch switch installs in standard European wall boxes used in French homes. Its 86 × 86 mm black tempered glass panel provides a modern finish while maintaining compatibility with common electrical infrastructures. A neutral wire is required. The combination of effortless touch control, remote control via the eWeLink app, and Alexa and Google Assistant voice compatibility makes the SONOFF TX EU Wi-Fi touch wall switch a natural replacement for traditional switches in a modern home automation setup.

 

Automated schedules, smart scenes, and 433 MHz RF receiver for multi-way control

Up to 8 timers work offline without a cloud connection, and additional schedules are available online via the eWeLink app for more complex automations. The integrated 433 MHz RF receiver allows pairing with a SONOFF or SmartWise RF remote control for two-way control without additional wiring, ideal for large rooms with multiple control points. The 3-gang version of the TX EU also supports interlock mode for uses where only one circuit needs to be active at a time.

 

The SONOFF TX EU Wi-Fi touch wall switch maintains control even without a cloud

LAN mode allows quick local control without systematically relying on the internet when the device and the home automation system are on the same network. Home Assistant users can also integrate the TX EU via the eWeLink or SonoffLAN integration to create advanced local automations. The inching function can be activated for uses requiring a temporary pulse rather than a stable state, such as a doorbell or gate. The ON/OFF state history is recorded in the eWeLink app, while smart scenes allow for creating custom automations between multiple connected devices. This flexibility naturally extends its use far beyond simple lighting control.

FAQ

Does the TX EU require a neutral for installation?

Yes, references T3EU1C and T3EU3C absolutely require live + neutral wiring. Without a neutral wire, installation is not possible with this model.

Can a two-way switch be created without additional wiring with the TX EU?

Yes, thanks to the integrated 433 MHz RF receiver, a SONOFF or SmartWise RF remote control can be paired to create two-way or multi-way control without switch-to-switch wiring. The RF remote control is sold separately.

Is the TX EU compatible with Apple HomeKit?

No, the TX EU works via the eWeLink app and is compatible with Amazon Alexa and Google Assistant, but does not natively support Apple HomeKit.

Is the SONOFF TX EU compatible with Home Assistant?

Yes. The TX EU can be integrated into Home Assistant via the eWeLink or SonoffLAN integration. This integration allows controlling the switch and using it in advanced local automations depending on the home automation system's configuration.

General Information

Brand
Sonoff

Manufacturer references (Factory SKU ID)

• T3EU1C (1-gang)
• T3EU3C (3-gang)

Electrical Characteristics

2-way or 3-way switching
Compatible with Sonoff or SmartWise 433 MHz RF switches, used as directly paired wireless controllers.

Rated current (output)

• T3EU1C: 2A
• T3EU3C: 1A per circuit (3A total)

Rated voltage (output)
100–240V AC

Supported Protocols

• 433 MHz RF receiver
• Wi-Fi

Remote Control / Smart Control

Cloud mode
yes — default connection to eWeLink cloud

LAN mode
yes, but only if the eWeLink cloud connection is interrupted or blocked
(limited functionality)

Notifications
notifications via the eWeLink smartphone app

History / Logging
yes — ON/OFF history recorded in the cloud

Additional Features

Inching
yes

Dimmer function
no

Interlock mode

• T3EU1C: not mentioned
• T3EU3C: yes

MQTT support
no

REST API support
no

RF transmitter / receiver
yes (RF receiver) — remote control available separately

Schedules / Timers
yes:

• 8 timers possible in offline mode
• additional schedules via the cloud in online mode

Web administration interface
On/Off mode (Premium feature via subscription)

Physical On/Off button
touch switch

Power Supply

Device power supply
110V–240V AC ±10%
(Live + Neutral required)

Design

Color
black, elegant tempered glass panel, with frame

Dimensions

Size / Dimensions
86 × 86 × 35 mm
(8.6 × 8.6 × 3.5 cm)

Circuits / Gangs

• T3EU1C: 1 circuit (1-gang)
• T3EU3C: 3 circuits (3-gang)

Smartphone application

eWeLink (Android, iOS)