Sonoff Mini WiFi R4 Smart Switch

The Compact In-Wall Smart Switch That Fits Anywhere

The Sonoff Mini WiFi R4 is an ultra-compact smart switch module designed to fit discreetly behind your existing wall switches. With WiFi connectivity and eWeLink app control, it transforms any standard switch into a smart one — without changing your wall plate or switch style.

• Ultra-compact design — fits inside standard wall switch boxes
• WiFi connected — control via the eWeLink app from anywhere
• Supports external switch input for manual on/off control
• Set schedules, timers, and automations with ease
• Compatible with Amazon Alexa and Google Home voice control
• Works with Home Assistant via eWeLink integration
• Supports both edge and follow switch modes

Smart control without changing a thing — the Mini R4 hides behind your existing switch and does all the work.