Sonoff ZB2GS Mini EXTREME DUO Channel - Dual Zigbee Relay

🧠 Sonoff Mini DUO: Simplicity and Intelligence in One!

MINI-ZB2GS is a compact and powerful dual-channel Zigbee smart switch designed for installation in standard wall boxes with a minimum depth of 60 mm. This switch enables independent control of two devices with a total resistive load of up to 16 A (maximum 10 A per channel, resistive load), meaning you can easily automate two lights or appliances without replacing existing switches.

Zigbee 3.0 Compatibility

Thanks to the standard Zigbee 3.0 protocol, it seamlessly integrates with third-party open-source platforms (e.g., Home Assistant – ZHA/Zigbee2MQTT), enabling cross-device automation and smart scene control.

It acts as a Zigbee router and features Turbo mode to boost signal strength and expand coverage for more stable device communication.

Smart Control

Transforms traditional switches into smart ones, supports app or voice control, and easily sets timers for smart and automated operation.

Ideal for retrofitting or smart upgrades when you want to discreetly control two circuits with an in-wall module – featuring fast installation and a reliable Zigbee connection.

One Button Unlocks Multiple Scenes

Thanks to the "Stepper" function, a single button can control two lights and toggle between multiple scenes – each step is fully customizable, allowing you to precisely define which actions are triggered.

📝 Note: Make sure your device firmware is updated to the latest version to support this feature. This feature is supported for either toggle or momentary switches.

Detach Relay, Turn Switches into Smart Triggers

The detach relay function separates the physical control of the switch from the connected device. As a result, the switch can function purely as a smart scene trigger, giving you seamless control over smart light bulbs.

Small and Safe

Its small form factor fits effortlessly behind wall switches, and its comprehensive safety features (such as overheat and surge protection) guarantee reliable operation in daily use.

Built for long-term reliability and stable performance, providing peace of mind and safety for your connected devices and home.

Power-On State Customized to Your Needs

Decide what happens when power is restored – restore the last state, turn on, or stay off. Your smart devices always follow your preferences after power outages or resets.

Simplify Everyday Scenarios

Create custom smart scenes that fit your lifestyle. From lighting to appliances, let automation take care of daily tasks.

Works with Apple Home via Matter Bridge

All solutions integrate SONOFF Zigbee devices into your Apple ecosystem via Matter Bridge, enabling seamless control of connected devices.

Compatible with Multiple Zigbee Hubs

Feature Overview

📝 Note: When adding this device directly via an Alexa gateway, non-optimal performance may occur. For best results, we recommend adding the device to the eWeLink app via a SONOFF Zigbee gateway and then synchronizing it with Alexa through the cloud.

Wiring

Compatible Mounting Boxes

Key Advantages

• 🌐 Zigbee 3.0 Compatibility: Works with Zigbee 3.0 hubs and open-source platforms for interconnected automation and smart scenes.
• 🔌 Dual Load Control: Two independent channels (max. 10 A per channel, 16 A total for resistive load) for separate control of two circuits.
• 🔄 Connection with Traditional Switches: Option to connect existing wall switches to combine manual and smart control.
• 📡 Zigbee Signal Booster: Integrated Zigbee router with Turbo mode to strengthen and expand network coverage.
• 📱 App & Voice Control: Control via compatible Zigbee gateway and eWeLink platform with voice assistant support.
• ⏱️ Advanced Automations: Timers, schedules, scenes, and customizable power-on behavior (last state, always on, always off).
• 🚦 Detach Relay Mode: Physical switch can serve purely as a smart scene trigger without turning off power to smart bulbs.
• 🌍 Local Control Without Internet: When connected to a Zigbee gateway, the device can be controlled locally even during an internet outage.
• 🔒 Small & Safe Design: Compact dimensions for easy installation and overheat plus surge protection for long-term reliability.

Specifications

• 📦 Product / Series: MINI DUO Series / MINI Extreme
• 🔌 Type: 2-gang Zigbee smart switch (neutral wire required)
• 🔢 Model: MINI-ZB2GS
• 📡 MCU / Radio: Silicon Labs EFR32MG21 (Zigbee 3.0)
• ⚡ Power Supply: 110–240 V~ 50/60 Hz (single-phase)
• 📏 Rated Load: 10 A per channel; max. 16 A total (resistive load)
• 🔌 External Switch Inputs: S1 (circuit 1), S2 (circuit 2); must not be connected to neutral wire or ground
• 🔧 Recommended Wiring: 16–14 AWG copper wire (solid / stranded)
• 📐 Dimensions: 45 × 39.4 × 16.8 mm
• ⚖️ Weight: 36.2 g
• 🖌️ Casing / Color: PC, white
• 🌡️ Operating Environment: indoor use; −10…+40 °C; 5–95% relative humidity (non-condensing)
• ✅ Certifications: CE / FCC / RoHS