Introduction
Upgrading your traditional systems with intelligent solutions is key to achieving convenience, energy efficiency, and enhanced security. SONOFF MINI-D is a compact, versatile Wi-Fi smart switch designed to take your home automation to the next level. Supporting both AC and DC input and featuring dry contact output, the MINI-D is ideal for controlling motors, garage doors, boilers, solenoid valves, and other dry contact input devices—all through remote control, smart scheduling, and voice commands.
What is SONOFF MINI-D?
SONOFF MINI-D is a Wi-Fi dry contact smart switch that allows you to control various appliances and systems without directly powering them. Its dry contact relay provides isolated signal transmission via its Normally Open (NO), Normally Closed (NC), and Common (COM) terminals, ensuring a safe and flexible connection. With support for both AC (100–240V) and DC (12–48V) power sources (choose one at a time), the MINI-D adapts seamlessly to different installation environments.
Key Features & Benefits
1. Versatile Power Input
- AC/DC Support: Choose between AC and DC input to suit your power environment. Whether you’re powering a motor or controlling a device with a DC supply, the MINI-D delivers the flexibility you need.
2. Dry Contact Relay Functionality
- Isolated Control: The dry contact design ensures that the control circuit remains isolated from the load, enhancing safety and reducing the risk of electrical faults.
- Multiple Connection Options: With dedicated NO, NC, and COM terminals, you can tailor the switching behavior to fit various applications such as garage doors, access control systems, or HVAC systems.
Learn more about Dry Contact:
3. Smart Remote Control and Automation
- Remote Access & Scheduling: Use the eWeLink app to remotely control your devices, set smart timers, and create automation scenes that suit your daily routine.
- Voice Control Integration: Enjoy hands-free control via popular voice assistants like Alexa, Google Home, or Apple Home—thanks to built-in compatibility with these platforms.
4. Matter Protocol Support
- Seamless Ecosystem Integration: The MINI-D is one of the first dry contact relays to support the Matter protocol, allowing it to integrate effortlessly with other Matter-enabled devices. This means you can create a unified smart home system that works across brands and platforms.
- Enhanced Interoperability: Whether you’re using Home Assistant, eWeLink, or another Matter-compatible ecosystem, the MINI-D simplifies the process of building and expanding your home automation network.
Capabilities on eWeLink vs. Matter Platforms
SONOFF MINI-D‘s capabilities on SONOFF ecosystem differ from Matter platforms. The table below summarizes the key differences:
Easy Installation & Integration
Installation & Wiring
Installing the MINI-D is straightforward. Simply wire your device according to the provided diagrams:
- Dry Contact Wiring: Connect your external load (e.g., garage door motor, solenoid valve) through the NO/NC/COM terminals.
- Power Supply: Choose between AC or DC input, ensuring not to mix both.
- External Switch Option: Use the S1 and S2 terminals to attach a manual switch if desired.
Integration with Home Automation Platforms
- eWeLink App: Start by adding MINI-D via the eWeLink app for initial setup, scheduling, and remote control.
- Matter Integration: With Matter support, integrate the MINI-D into ecosystems like Home Assistant, Apple Home, or Google Home for unified control. Simply scan the QR code on the device to pair it with your Matter server.
Use Cases
- Garage Door Automation: Control your garage door remotely, schedule open/close times, and integrate with security systems for added safety.
- Motor & Solenoid Valve Control: Perfect for small DC motors or solenoid valves in irrigation systems, HVAC setups, or access control applications.
- Boiler & Heating Systems: Automate your heating system with precision control over temperature and energy usage.
- Smart Scenes & Automation: Combine the MINI-D with other smart devices to create complex automation routines that simplify your daily life.
Learn more about its home automation projects here:
DIY Smart Home Projects: Automation Use Cases with SONOFF Dry Contact Smart Switch
Conclusion
SONOFF MINI-D stands out as a cost-effective, versatile smart switch that bridges traditional dry contact applications with modern home automation. Its support for AC/DC inputs, dry contact functionality, and seamless Matter integration make it an excellent choice for anyone looking to upgrade their smart home setup—whether for controlling a garage door, managing HVAC systems, or automating access control systems.
Priced affordably and packed with advanced features, the MINI-D is a smart investment that enhances control, safety, and interoperability across your smart home ecosystem.
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