The SONOFF MINI DUO L (MINI-ZB2GS-L) is an ultra-compact, dual-channel Zigbee smart switch specifically engineered for homes where no neutral wire is present in the wall box. It offers high compatibility with standard Zigbee 3.0 coordinators, enabling independent, local execution of two separate lights or circuits via voice, app, or physical toggles. Its tiny form factor ensures it hides effortlessly inside standard mounting boxes, while its state-of-the-art "No Neutral Required" design removes the need for complex and costly rewiring. Built with full safety protection, power-on memory tracking, and an innovative anti-flicker construction, it provides a stable, cloud-free home automation retrofit solution perfect for modern or heritage properties alike.
Overview:
The SONOFF MINI DUO L 2-Gang Zigbee Smart Switch (MINI-ZB2GS-L) is an advanced multi-channel lighting module that allows you to automate dual-switch wall boxes without modifying existing infrastructure. Operating over the stable and efficient Zigbee 3.0 mesh standard, it interfaces directly with major local servers like Home Assistant, as well as mainstream hubs like Amazon Alexa and Samsung SmartThings. The MINI-ZB2GS-L controls two electrical loads independently, providing versatile retrofit options behind standard push buttons or rocker switches. Its "Detach Relay" mode separates physical switch inputs from the circuit, keeping smart bulbs constantly powered, while its local memory configuration safely manages appliance behavior during recovery from load shedding outages.
Features:
- No Neutral Wire Required: Advanced single-wire design eliminates the need for trailing neutral lines, simplifying installations in older or standard electrical boxes.
- 2-Gang Independent Control: Manage two lights or appliance loads completely independently from a single, ultra-small module.
- Zigbee 3.0 Mesh Protocol: Pairs natively with Zigbee 3.0 coordinators to deliver stable, local, low-latency device performance without choking Wi-Fi loops.
- Ultra-Miniature Build Size: Exceptionally small footprint makes it easy to position behind existing dual wall plate toggles without modification.
- Detach Relay Mode: Disconnects physical switch behavior from the relay loops, allowing you to use wall switches as software scene controllers without cutting power to smart bulbs.
- Smart Scene & Automation Triggers: Build sophisticated automations using integrated sensors, setting timing conditions, countdown loops, or custom dependencies.
- Configurable Power-On Memory: Customize individual channel recovery behaviors (ON, OFF, or Last State) to ensure stable operation when mains power resumes after load shedding.
- Anti-Flicker Hardware Engineering: Advanced internal suppression architecture prevents common lower-wattage LED flickering without requiring massive external bypass capacitors.
Specification:
- Model / MPN: MINI-ZB2GS-L
- Product Name: SONOFF MINI DUO L 2-Gang Zigbee Smart Switch (No Neutral)
- Wireless Protocol: Zigbee 3.0 (IEEE 802.15.4, 2.4 GHz)
- Input Voltage Range: 100-240V AC, 50/60Hz (Fully compatible with South African 220-240V lines)
- Control Output Channels: 2 Independent loads
- Max Current per Gang: 10A Max Load per circuit (resistive)
- Max Combined Current Total: 16A Maximum Total continuous load
- Casing Materials: PC V0 (Premium fire-retardant material)
- External Switch Support: Mechanical Rocker / Toggle Switches and momentary Push Buttons
- Platform Compatibility: Home Assistant (ZHA & Zigbee2MQTT), eWeLink App, Amazon Alexa, Google Home, IFTTT
Package includes:
- 1 x SONOFF MINI DUO L 2-Gang Zigbee Smart Switch (MINI-ZB2GS-L)
- 1 x Quick Installation Reference & User Manual
Smart Automation Simplified: No Neutral Wire Required
Upgrade your lighting without the massive headache of cutting into walls or pulling new wiring! The MINI DUO L features a revolutionary single-live wire engineering approach that lets you bring smart home automation to your home using only the existing lines behind your light switch plates. It's the ultimate hassle-free retrofit solution for standard South African electrical boxes.
*Note: This model is specifically engineered for setups without a neutral line; ensure minimum load values are maintained for stable performance.
Double the Control: Two Independent Circuits in One Module
— Why deploy multiple modules when one compact device handles it all? The MINI-ZB2GS-L gives you full, independent dual-channel capability. This means you can manage two separate lighting circuits—like your main downlights and ambient accents, or adjacent hallways—independently from a single physical wall box point.
Ultra-Miniature Design That Hides out of Sight
- Big smart capabilities packed into an impossibly small package. Shrunk down to fit into cramped, standard-depth in-wall junction boxes, this tiny switch installs completely out of sight. Keep your original wall plates, style preferences, and decor untouched while adding state-of-the-art smart features behind the scenes.
Uncompromising Safety: Flame-Retardant and Reliable
Rest easy knowing your property is protected by industrial-grade safeguards. Encased in high-performance, fire-retardant PC V0 casing materials, this switch is designed to withstand everyday thermal stresses. It incorporates comprehensive overheat, overload, and electrical surge protection to guarantee long-term operational reliability behind your walls.
Smart Bulbs Stay Online with Detach Relay Mode
Say goodbye to the annoyance of smart lights becoming unresponsive when someone turns off the wall switch! When you activate Detach Relay mode, the physical wall toggle no longer cuts the power flow. Instead, it acts as a smart scene trigger while keeping your smart bulbs continuously powered and reachable via apps and voice control.
Load Shedding Recovery: Smart Power-On Memory States
Don't let post-load shedding surges turn all your lights on in the middle of the night. With customizable Power-On states, you can explicitly choose how each channel responds when mains power returns. Set them to default to OFF, resume their last active state, or turn ON based on your exact household routines.
Seamless Local Execution with Open-Source Platforms
Take full ownership of your privacy and ensure instantaneous response times. The MINI DUO L operates seamlessly over standard Zigbee 3.0 mesh architectures, pairing natively with open-source smart servers like Home Assistant (ZHA/Zigbee2MQTT), openHAB, and standard hubs. Your triggers execute locally without cloud delays or internet dependencies.
Flawless Anti-Flicker Performance for Modern LEDs
Enjoy smooth, completely flicker-free lighting even with energy-efficient, low-wattage LED bulbs. This switch features an advanced internal electrical stabilization matrix designed to handle micro-current loops cleanly, ensuring completely steady illumination without requiring bulky external bypass capacitors.
