Shelly 1 Mini Gen4
Overview
Shelly 1 Mini Gen4 is an ultra-compact 1-channel smart relay designed for retrofit installations behind wall switches, sockets, and tight back boxes. It provides reliable on/off control for lighting and small electrical loads, and its dry contact (potential-free) output makes it flexible for both standard switching and low-voltage/control applications (e.g., contactor triggering).
As a Gen4 multi-protocol device, Shelly 1 Mini Gen4 can be used over Wi-Fi, Zigbee, Bluetooth, or Matter, letting you choose the best fit for your system (and change approach depending on whether you want hub-free control or a Zigbee mesh). It also supports advanced integrations (e.g., Home Assistant), schedules, scenes, webhooks, and scripting for more complex local automation.
Key Features
• Ultra-compact 1-channel relay – ideal for tight wall boxes and retrofits
• Dry contacts (potential-free) – flexible switching for a wide range of loads and control circuits
• Up to 8A at 240V AC and up to 5A at 30V DC
• Multi-protocol connectivity: Wi-Fi / Zigbee / Bluetooth / Matter
• Matter-certified – integrates into Matter ecosystems (including Apple Home via Matter)
• Fast Gen4 platform – ESP-Shelly-C68F processor with 8MB memory
• Wi-Fi 6 support (2.4 GHz) for improved network performance
• Acts as a Wi-Fi / Zigbee extender and Bluetooth gateway
• Supports schedules, scenes, MQTT, webhooks, WebSocket, HTTPS, UDP, TLS and custom certificates
• Full mJS scripting support for advanced custom automation
Technical Specifications
Power Supply: 110–240 V AC ±10%, 50/60 Hz
DC Supply: N/A (powered from AC)
Max Switching Voltage: 240 V AC / 30 V DC
Max Switching Current: 8 A (AC) / 5 A (DC)
Max Switching Power: 2000 W (AC) / 150 W (DC)
Power Consumption: < 1.2 W
Dry Contacts (Potential-Free): Yes
Power Monitoring: No
Internal Temperature Sensor: Yes
Schedules: 20
Webhooks: 20 (up to 5 URLs per hook)
MQTT: Yes
UDP: Yes
Scripting: Yes
Wi-Fi: 802.11 b/g/n/ax (2.4 GHz), 2412–2472 MHz
Wi-Fi Range: up to 30 m indoors / 50 m outdoors (construction dependent)
Zigbee: 802.15.4, repeater supported
Zigbee Range: up to 100 m indoors / 300 m outdoors (construction dependent)
Bluetooth: 4.2, up to 10 m indoors / 30 m outdoors (construction dependent)
Dimensions: 29 × 35 × 16 mm (±0.5 mm)
External Protection (recommended): 10 A (B or C curve), 6 kA interrupt rating, Energy limiting class 3
Operating Temperature: -20 °C to 40 °C
Humidity: 30–70% RH
Installation Notes
• Designed for in-wall installation behind switches/sockets — always check back-box depth before purchase
• Dry contact output is ideal for applications needing potential-free switching (e.g., contactor inputs, control circuits)
• Choose Wi-Fi / Matter for hub-free operation, or Zigbee for mesh coverage (Zigbee requires a compatible Zigbee hub/coordinator)
• If installing on mains voltage, installation should be completed by a qualified electrician
In the Box
• Shelly 1 Mini Gen4
• User guide