ESP32-C3 EU Wall Smart Switch with ESPHome and Bluetooth Proxy, Neutral and No-Neutral Wiring
This product is No-Neutral and Neutral-need Dual Mode version
Flexible Wiring for a Fully Local Smart Home
Upgrade your lighting with an EU-standard smart wall switch designed for Home Assistant and ESPHome.
The switch supports both with-neutral and no-neutral wiring, making it suitable for modern and older European homes. It features an ESP32-C3 chip, pre-installed ESPHome firmware and Bluetooth proxy functionality enabled by default.
Control your lights locally, create Home Assistant automations and extend Bluetooth Low Energy coverage with one compact in-wall device.
Main Features
EU-standard smart wall switch
Supports wiring with a neutral wire
Supports wiring without a neutral wire
Built-in ESP32-C3 processor
ESPHome firmware pre-installed
Native Home Assistant integration
Bluetooth proxy enabled by default
Extends Bluetooth Low Energy coverage
Local physical switch control
Local smart home operation
2.4GHz Wi-Fi connectivity
ESPHome OTA firmware updates
No mandatory manufacturer cloud service
Open and customizable configuration
Two Wiring Modes
With Neutral Wire
Use this wiring method when a neutral wire is available inside the wall box. It generally provides the most stable power supply and the broadest compatibility with different lighting loads.
Without Neutral Wire
The no-neutral wiring mode is designed for installations where only the live wire and switched live wire are available inside the wall box.
Compatibility in no-neutral mode depends on the lamp type and power consumption. Some low-power LED lamps may require a compatible bypass capacitor to prevent flickering or incomplete switch-off.
Always follow the product wiring diagram.
ESPHome Pre-Installed
ESPHome firmware is installed before shipping, allowing the switch to integrate easily with Home Assistant.
Once connected, you can:
Turn lights on or off remotely
View the current switch status
Create schedules and timers
Build automations with other Home Assistant devices
Control lights based on motion or presence
Add the switch to Home Assistant dashboards
Update the firmware wirelessly
Customize its behavior through ESPHome
No proprietary manufacturer app or mandatory cloud account is required for normal local operation.
Bluetooth Proxy Enabled by Default
Bluetooth proxy functionality is enabled in the default ESPHome firmware.
The switch can help Home Assistant receive data from supported nearby Bluetooth Low Energy devices, including:
Temperature and humidity sensors
Door and window sensors
Plant sensors
Bluetooth beacons
Presence sensors
Other compatible BLE devices
Installing multiple switches in different rooms can help expand Bluetooth coverage throughout your home.
A compatible Home Assistant installation and Bluetooth integration are required.
Native Home Assistant Integration
The switch communicates with Home Assistant through the native ESPHome integration, providing fast local control and status updates.
Use it with:
Motion sensors
Door sensors
Presence detection
Time-based schedules
Sunrise and sunset automations
Home and away modes
Voice assistants connected through Home Assistant
Other ESPHome devices
The physical switch remains available for normal manual control, even when Home Assistant is offline.
Open and Customizable
ESPHome gives advanced users the freedom to modify the device configuration.
You can customize:
Physical button behavior
Relay behavior
Status indicator behavior
Bluetooth proxy settings
Wi-Fi and network settings
Home Assistant entities
Local automations
Restart and recovery behavior
OTA update settings
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Smart wall switch |
| Installation Standard | EU |
| Main Chip | ESP32-C3 (4MB) |
| Pre-Installed Firmware | ESPHome |
| Smart Home Integration | Home Assistant via native ESPHome API |
| Wi-Fi | 2.4GHz |
| Bluetooth Proxy | Enabled |
| Wiring Modes | With neutral wire or without neutral wire |
| Voltage | 220V - 240V AC |
| Power | 10~400W/gang INC 5~200W/gang LED |
| Certification | CE, RoHS, FCC |
| Installation Type | In-wall installation |
| Custom Firmware Configuration | Supported |
Ideal Applications
Home Assistant smart homes
ESPHome installations
Local smart lighting systems
Bluetooth coverage extension
Homes with a neutral wire
Older homes without a neutral wire
Renovation and retrofit projects
Privacy-focused smart home systems
Important Information
Turn off the main power supply before installation.
Installation should be completed by a qualified electrician.
Check the wiring diagram carefully before connecting the switch.
Do not use the neutral and no-neutral wiring methods at the same time.
A 2.4GHz Wi-Fi network is required.
Initial Wi-Fi configuration is required before use.
Bluetooth proxy performance depends on installation position, wall materials and nearby wireless interference.
No-neutral compatibility depends on the connected lamp and load power.
Some low-power LED lamps may require a compatible bypass capacitor.
Confirm that the switch rating is suitable for the connected load before installation.
