Shelly 1 Mini GEN4 is the latest fourth-generation version of Shelly’s 1-gang smart relay. Like its predecessor, it supports switching up to 8A and allows dry contact switching, since the controlled circuit remains electrically independent from the power supply used to operate the relay. This model does not include power metering functionality.
As with all Shelly devices, the Shelly 1 Mini GEN4 can connect directly to your Wi-Fi router — no need for a hub, gateway, or local bridge — and comes with native Matter compatibility.
Shelly GEN4 devices also offer an alternative operation mode, which must be selected before pairing. In this mode, the device can communicate via Zigbee and be paired with a Zigbee gateway or coordinator.
Whether used in Wi-Fi or Zigbee mode, the Shelly 1 Mini GEN4 is ideal for automating a lamp or any electrical appliance and can be part of a full smart home system—perfect for home renovations. It’s one of the most compact Wi-Fi/Zigbee-enabled devices available for smart switching and is small enough to fit behind standard wall switches or inside junction boxes, even in retrofit installations.
Once installed behind your existing wall switch, you can control your lighting or other connected appliances remotely while still using the physical switches. That makes it perfect for retrofitting existing systems to make them smart. It works with single-button switches and is not recommended for controlling power outlets due to its 8A current limit.
The relay includes a switch input, so you can continue using the physical wall switch, while also controlling the light or appliance via Wi-Fi.
You can configure automatic on/off timers as well. The app also allows you to disable the wall switch function entirely—useful in children’s rooms.
The Shelly 1 Mini GEN4 is compatible with toggle and momentary (puch button) switches and supports two-way configurations. The auto-off feature allows it to operate in momentary switching mode as well.
Dry Contact Switching – As with the previous generation, the Shelly 1 Mini GEN4 supports dry contact switching. It can switch up to 8A at 240V AC or 5A at 30V DC, making it suitable for potential-free applications such as garage doors, gate openers, or irrigation systems. It can also switch 12V or 24V DC/AC circuits.
Important: The device requires both live and neutral wires to operate. The switched phase from the wall switch must be in the same phase angle as the input phase—this product is not suitable for multi-phase installations.
What’s New in GEN4
- Now equipped with the new ESP-Shelly-C68F chip, replacing the older ESP-Shelly-C38F – delivering faster, more reliable, and energy-efficient performance.
- Increased memory: 8MB flash memory (double that of the GEN3 version).
- Improved Wi-Fi and Bluetooth support.
- Compatible with Matter smart home standard, so it is also compatible with Apple HomeKit
- Still supports Wi-Fi Repeater Mode, allowing better connectivity for distant Shelly devices.
- Works as a Bluetooth gateway for Shelly Bluetooth sensors and remotes.
- Built-in overheating protection for safer operation.
- Zigbee communication support.
Key Features & Automation Options
- Supports HTTP/HTTPS webhooks for integration with other systems.
- Sunrise and sunset-based automation, with up to ±23-hour offset.
- Stores up to 20 schedules, operates offline.
- Built-in auto-on/off timer functions.
- Supports mjS scripting, allowing custom automation routines.
- Run multiple scripts simultaneously, triggered by input/output events, sensor data, or network requests.
Supported Operation Modes
- Cloud Mode: Remote control via the Shelly Cloud, using the mobile app or browser.
- LAN Mode: Works on local network without internet access.
- Wi-Fi Access Point Mode: Creates its own Wi-Fi network—ideal when no fixed Wi-Fi is available.
- Supports Shelly Cloud Scenes and Direct Device-to-Device (DDD) mode for local automation—no internet required.
Integration & Compatibility
The Shelly 1 Mini GEN4 is highly open and easy to integrate:
- Supports MQTT protocol and REST API control.
- Voice control via Google Home, Amazon Alexa, and Yandex Alice.
- Integrates with SmartThings via Shelly Cloud.
- Apple HomeKit compatible (thanks to Matter standard compatibility)
- Compatible platforms include:
- Homey
- Home Assistant
- openHAB
- Domoticz
- ioBroker
- HomeSeer
- nymea
- Hubitat
- Hoobs
- SYMCAN
- …and many more.
Supports simultaneous use of Shelly Cloud and MQTT.
Installation
- Ultra-compact size fits behind standard wall switches or inside wall boxes.
- Ideal for automating appliances with consumption under 8A.
Technical Specifications
- Operating Voltage: 110V–240V AC
- Max Load: 8A (240V AC) / 5A (30V DC)
- Dry Contact Switching: Yes
- Control Options: Wi-Fi + Bluetooth or Zigbee
- Chipset: ESP-Shelly-C68F
- Memory: 8MB flash
- Operating Temperature: -20°C to +40°C
- Operating Humidity: 30% – 70% RH
- Protection: Built-in overheating protection
- Switch Input: Yes
- Repeater & Bluetooth Gateway: Yes
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