Shelly 1 Mini Gen4 smart relay is an extremely compact, next-generation device equipped with potential-free (dry) contacts. It is specifically designed for discreet installation behind your existing wall switches. Furthermore, it fits easily inside tight electrical junction boxes or device enclosures where space is limited. This smart relay requires a neutral wire (N) to operate and integrates smoothly with any standard electrical setup.
Revolutionary Connectivity: Wi-Fi 6, Zigbee 3.0, and Matter
Thanks to its advanced multi-protocol architecture, this smart relay connects natively to almost any smart home ecosystem. You do not even need an additional proprietary hub. Whether you prefer Alexa, Google Home, Apple HomeKit, or an advanced Home Assistant setup, the Shelly 1 Mini Gen4 ensures lightning-fast responsiveness. Therefore, you can easily automate your lights, fans, or other electrical appliances up to 8A using customized smart schedules and automation scenes.
The Power of Dry Contacts (Potential-Free)
The main advantage of the Shelly 1 Mini Gen4 is its built-in dry contact design. Because the output circuit is completely isolated from the device’s own power supply, you have total freedom to switch different voltage levels. Consequently, this makes the relay an ideal solution for specialized tasks:
- Controlling garage doors and motorized gate gates
- Automating garden irrigation and sprinkler valves
- Integrating with existing doorbells and intercom systems
- Managing heavy-duty electrical contactors
Advanced Network and Extension Features
Beyond its primary switching functions, this module acts as a highly efficient Wi-Fi range extender. In fact, it also functions as a local Bluetooth gateway for all your Shelly BLU smart accessories. This setup allows you to expand your smart home network coverage seamlessly. Therefore, you can avoid buying expensive additional hardware to boost your wireless signals.
Professional Installation and Safety
The device is equipped with advanced software protections against overheating and overvoltage. Because it works with high-voltage electrical mains, professional installation by a qualified electrician is highly recommended. Additionally, you must always turn off the main circuit breaker before starting any physical installation work.









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