ESPHome Mini Smart Relay with Energy Monitoring
Turn Any Existing Switch into a Smart Switch
Upgrade your traditional wall switch without replacing it. This compact ESPHome Mini Smart Relay is powered by the ESP32-C3 and is designed to fit neatly inside most standard wall switch boxes. It transforms ordinary lighting and appliances into smart devices while keeping your existing switch fully functional.
Pre-installed with ESPHome firmware, it integrates seamlessly with Home Assistant and gives you complete local control—no cloud required.
Key Features
⚡ Native ESPHome Support
Pre-flashed with the latest ESPHome firmware
Seamless integration with Home Assistant
Fully local control with no cloud dependency
Easy customization through YAML configuration
OTA firmware updates supported
📊 Built-in Energy Monitoring
Equipped with the reliable HLW8032 energy metering IC, the relay provides accurate real-time electrical measurements.
Monitor:
Voltage
Current
Active Power
Energy Consumption (kWh)
Perfect for tracking appliance power usage and improving energy efficiency.
🔌 10A High-Quality Relay
A built-in 10A relay delivers dependable switching performance for a wide range of household loads.
Suitable for:
Lighting
Ceiling fans
Exhaust fans
Small appliances
Smart automation projects
📶 Bluetooth Proxy Ready
The ESP32-C3 features integrated Bluetooth Low Energy, allowing the device to operate as an ESPHome Bluetooth Proxy by default.
Benefits include:
Extend Bluetooth coverage throughout your home
Connect Bluetooth sensors to Home Assistant
Improve Bluetooth device reliability
No additional Bluetooth gateway required
🎛 External Switch Input
Designed for easy retrofit installations, the relay supports connection to an external wall switch.
Compatible with:
Toggle switches
Momentary push buttons
Existing mechanical switches
Enjoy both manual control and smart automation without changing your daily habits.
📦 Ultra-Compact Design
The miniature enclosure is specifically designed to fit inside most standard wall switch boxes, making installation clean and discreet.
Ideal for:
Existing homes
Smart home retrofits
Hidden installations
Space-limited electrical boxes
Technical Specifications
| Specification | Details |
|---|---|
| Firmware | ESPHome (Pre-installed) |
| MCU | ESP32-C3 |
| Wi-Fi | 2.4GHz IEEE 802.11 b/g/n |
| Bluetooth | Bluetooth LE (Bluetooth Proxy Supported) |
| Energy Metering | HLW8032 |
| Relay Rating | 10A |
| External Switch | Supported |
| Control | Local Control via Home Assistant |
| Firmware Updates | OTA Supported |
| Installation | Fits Inside Standard Wall Switch Boxes |
Why Choose This ESPHome Mini Relay?
✅ Pre-installed ESPHome firmware
✅ True local control
✅ Accurate energy monitoring
✅ Reliable 10A relay
✅ Built-in Bluetooth Proxy
✅ Supports existing wall switches
✅ Compact size for hidden installation
✅ Perfect integration with Home Assistant
Typical Applications
Smart Lighting Control
Wall Switch Automation
Energy Monitoring
Home Assistant Projects
Smart Home Retrofits
Appliance Automation
Bluetooth Sensor Gateway
Local IoT Automation
Package Includes
1 × ESPHome Mini Smart Relay
1 × User Manual
