Smart mini Wi‑Fi dimmer controller Sonoff MINI‑DIM — compact in‑wall module for LED/lighting dimming, Matter compatible

Sonoff MINI-DIM Matter Smart Mini WiFi Controller/Dimmer is an ultra-compact, flush-mounted module that converts a conventional wall switch into a Matter-compatible smart dimmer. It provides on/off switching, smooth 0–100% trailing-edge dimming, energy monitoring, schedules, scenes, voice control and local LAN operation via WiFi. The device fits into a standard flush-mounted box and supports common lamp types so you can upgrade existing lighting without replacing fixtures.

Advantages

MINI-DIM supports the Matter standard for broad interoperability with Apple Home, Google Home, Amazon Alexa, SmartThings and Home Assistant. An energy-efficient ESP32-C3 MCU ensures stable 2.4 GHz WiFi connection and OTA updates. Trailing-edge dimming with automatic calibration delivers flicker-free brightness control while built-in power measurement helps monitor and optimize energy use. Compact dimensions allow installation behind traditional switches without major rewiring.

Suitable for

• Converting conventional switches to smart dimmers in living rooms, bedrooms and kitchens
• Controlling dimmable LED fixtures and decorative lighting
• Replacing simple on/off switches where schedules, scenes or voice control are required
• Installations requiring local LAN control and energy monitoring

Key specifications

• Communication: Matter over WiFi (2.4 GHz IEEE 802.11 b/g/n)
• Control MCU: ESP32-C3
• Supply voltage: 220–240 V AC, 50 Hz
• Maximum resistive load: 400 W
• Maximum dimmable LED load: 200 VA
• Supported lighting types: dimmable LEDs, incandescent, halogen, dimmable electronic transformers
• Dimming range: 0–100% (trailing-edge)
• Brightness calibration: automatic
• Energy monitoring: yes
• Local LAN control: yes
• Voice control: yes
• OTA updates: yes
• Neutral wire required: yes
• Housing material: flame-retardant PC plastic
• Color: white
• Dimensions: 45 × 39.4 × 16.8 mm
• Weight: 24.5 g
• Operating temperature: -10°C to 40°C
• Operating humidity: 5–95% RH (non-condensing)

How to use

Turn off mains power, install the MINI-DIM module into a standard flush-mounted box behind the switch, and connect live, neutral and load wires following the wiring diagram. Restore power, pair the device using the eWeLink app or Matter setup code, then configure brightness, schedules and scenes. Voice assistants and local LAN control can be enabled through the respective platform during setup. Automatic calibration runs when a compatible lamp is connected to optimize dimming range.

Usage recommendations

Use with dimmable lamps within the specified load limits (LED up to 200 VA, resistive/halogen up to 400 W). Ensure a neutral wire is available and follow local electrical regulations; installation by a qualified electrician is recommended. Place the module indoors in the recommended temperature and humidity range and keep the WiFi router on 2.4 GHz for stable connection.