# SONOFF MINI DUO 2-Gang Matter Over WiFi Smart Switch (MINI-2GS)

SONOFF MINI DUO is a useful Matter retrofit when two simple circuits need to share one compact relay module. Its low price and direct Wi-Fi pairing are appealing, but the shared resistive-load limit, neutral requirement, box depth, and local electrical approval matter more than its ecosystem logos.

Canonical page: https://matterhome.io/devices/sonoff-mini-duo-mini-2gs
Markdown page: https://matterhome.io/devices/sonoff-mini-duo-mini-2gs.md
Author: Matterhome Editorial Team
Author profile: https://matterhome.io/authors/matterhome-editorial-team
Editorial lead: JC Martinez
Editor profile: https://matterhome.io/authors/jc-martinez

## Device Facts

- Brand: SONOFF
- Model: MINI DUO 2-Gang Matter Over WiFi Smart Switch (MINI-2GS)
- Product type: Dual-channel Matter Wi-Fi relay switch
- Category: Switches
- Connection: Matter over Wi-Fi
- Matter status: SONOFF sells MINI-2GS with direct Matter commissioning over 2.4 GHz Wi-Fi; its current manual documents QR-code setup for Apple Home, Google Home, Alexa, and SmartThings, while the product page also lists Home Assistant.
- Launch date: 2025-11-27
- Thread border router required: No
- Brand hub required: No
- Typical price range: About $18 from SONOFF before shipping
- Markets: North America, Europe
- Review status: Compatibility guide
- Product image: https://assets.matterhome.io/content/devices/sonoff-mini-duo-mini-2gs/product.b2aba222db353f2220f7/source.webp
- Product image alt text: White SONOFF MINI-2GS dual-channel relay with labeled live, neutral, output, and switch terminals
- Product image source: https://cdn.shopify.com/s/files/1/0742/9963/8001/files/MINI-2GS_Main_de55928c-2fd9-40fe-b84b-8adb88c49e62.avif?v=1772594073

## Ecosystem Support

- Apple Home: Supported
- Google Home: Supported
- Alexa: Supported
- SmartThings: Supported
- Home Assistant: Supported

## Best For

- Two lighting circuits that need independent Matter control behind an existing wall switch
- Buyers who want a compact dual-channel relay without adding Thread infrastructure or a brand hub
- Retrofit jobs where rocker or momentary wall controls should remain usable

## Skip If

- The box lacks neutral wiring, 60 mm of depth, or a locally accepted professional installation path
- Either circuit needs dimming, energy monitoring, or an unverified motor or inductive-load rating
- The combined resistive load could exceed 16 A or either channel could exceed 10 A
- A finished wall control is preferable to a hidden module plus separate switches

## Setup Notes

- Have a professional electrician install and maintain MINI-2GS with power disconnected and verified off.
- Confirm single-phase 110-240 V power, live and neutral conductors, copper 16-14 AWG wiring, a box at least 60 mm deep, and two suitable loads.
- SONOFF requires an upstream 16 A miniature circuit breaker or residual-current breaker with integral overcurrent protection.
- Pair from the chosen Matter app over 2.4 GHz Wi-Fi; use eWeLink for firmware and SONOFF-specific settings such as Stepper or detach-relay mode.

## Known Limitations

- SONOFF rates each channel for up to 10 A and both channels together for no more than 16 A, all stated as resistive load.
- S1 and S2 are switch inputs and must not be connected to neutral or ground.
- Stepper mode requires MINI-2GS firmware 1.1.2 or later and cannot run while detach-relay mode is enabled.
- The current product page lists CE, FCC, and RoHS but does not name a UL or ETL safety listing; verify local electrical acceptance before installation.
- Matterhome has not tested pairing, terminal fit, heat under load, Wi-Fi range, or ecosystem feature parity.

## Pros

- Controls two independent loads from one compact module
- Pairs directly over Matter without a Thread border router or SONOFF hub
- Supports physical rocker or momentary switches
- Accepts 110-240 V, 50/60 Hz single-phase power

## Cons

- Requires neutral wiring, a 60 mm-deep mounting box, and professional mains installation
- The two outputs share a 16 A total resistive-load ceiling, with a 10 A limit per channel
- Stepper, detach-relay, and power-on settings remain SONOFF app features rather than portable Matter controls
- SONOFF does not document dimming, energy monitoring, or curtain-motor control

## Sources

- https://sonoff.tech/products/sonoff-mini-duo-2-gang-matter-over-wifi-smart-switch-mini-2gs
- https://sonoff.tech/en-us/products/sonoff-mini-duo-2-gang-matter-over-wifi-smart-switch-mini-2gs
- https://sonoff.tech/en-fr/products/sonoff-mini-duo-2-gang-matter-over-wifi-smart-switch-mini-2gs
- https://sonoff.tech/products/sonoff-mini-duo-2-gang-matter-over-wifi-smart-switch-mini-2gs.js
- https://support.sonoff.tech/mini-2gs-usermanual/
- https://sonoff.tech/blogs/news/sonoff-mini-2gs-mini-zb2gs-stepper-function-control-two-loads-with-one-switch
- https://cdn.shopify.com/s/files/1/0742/9963/8001/files/MINI-2GS_Main_de55928c-2fd9-40fe-b84b-8adb88c49e62.avif?v=1772594073

A ceiling light and a row of spotlights can leave a buyer choosing between two smart relays and one crowded box. SONOFF MINI DUO handles both circuits in one `45 x 39.4 x 16.8 mm` module, exposes them as separate controls, and pairs directly through Matter over Wi-Fi. At about $18 for one, it is an unusually cheap answer when the electrical job fits.

The price does not settle that fit. MINI-2GS needs neutral wiring, a box at least 60 mm deep, and professional mains installation. Its two channels also share one load budget. Matterhome has not tested the module, so this is a compatibility guide rather than a judgment on its terminals, temperature under load, or long-term reliability.

## Two outputs share one electrical limit

MINI-2GS is model `MINI-2GS`; SONOFF's current one-pack store SKU is `6920075743623`. The module accepts single-phase 110-240 V power at 50 or 60 Hz. Each output is rated for up to 10 A, but the two outputs together must stay at or below 16 A. SONOFF states those figures for resistive loads.

That distinction should shape the project. Two conventional lighting circuits are an easier fit than a light and an arbitrary motor. SONOFF uses a bathroom exhaust fan as one Stepper example, but the product FAQ specifically rejects curtain motors because the module lacks interlock, motor calibration, and percentage control. A fan, pump, transformer, or other inductive load needs a documented suitability check rather than an assumption based on the 16 A headline.

The manual calls for copper 16 to 14 AWG solid or stranded conductors and an upstream 16 A miniature circuit breaker or residual-current breaker with integral overcurrent protection. It also warns that S1 and S2 are switch inputs, not neutral or ground connections. These are reasons to give the wiring diagram and local code to the electrician before ordering, not after the module is open on the bench.

## Pair two endpoints, configure the wall separately

Once installed, MINI-2GS joins through Matter over 2.4 GHz Wi-Fi. It does not need a Thread border router or a SONOFF hub. SONOFF's manual provides QR-code commissioning paths for Apple Home, Google Home, Alexa, and SmartThings, and the product page also names Home Assistant.

The safe cross-platform expectation is two ordinary switch endpoints. Give them names based on the connected loads, such as ceiling light and spotlights, then test each endpoint from the app and at the wall before building routines. A vague name such as switch one is an invitation for voice commands and automations to target the wrong circuit.

SONOFF's Stepper, detach-relay, inching, and power-on settings belong to the eWeLink side of the device. The current materials do not say that those controls travel through Matter, and they do not document energy monitoring or dimming. Use Matter for shared on-off control. Keep eWeLink only when its firmware or hardware-specific configuration earns the extra app.

MINI-2GS accepts rocker and momentary switches. With firmware 1.1.2 or later, SONOFF's Stepper mode can make one physical input cycle through custom combinations of the two outputs. That can preserve a single-gang wall control while adding a second lighting layer behind it.

Stepper is useful only when its interaction is intentional. The wall-switch type in eWeLink must match the installed control, and enabling detach-relay mode disables Stepper. A configuration that only the installer understands will be frustrating later, so the final switch behavior should be tested and documented for the household before the box is closed.

## Buy it for two known circuits

MINI DUO makes sense when two simple loads, neutral wiring, Wi-Fi coverage, box space, and a professional installation path are already confirmed. It keeps the dual-channel job in one module while preserving physical control for both circuits.

[SwitchBot Relay Switch 2PM](/devices/switchbot-relay-switch-2pm) and [Shelly 2PM Gen4](/devices/shelly-2pm-gen4) are stronger alternatives when power data matters. [SONOFF MINIR4M](/devices/sonoff-mini-extreme-matter-switch) is the simpler choice for one load and a tighter box. Do not buy MINI-2GS merely because two outputs sound efficient. Buy it when both circuits fall clearly inside the documented electrical and control limits.