Sonoff Mini R4 Extreme Wi-Fi Smart Switch

The Smallest Sonoff WiFi Switch — Extreme Compact, Maximum Smart

The Sonoff Mini R4 Extreme Wi-Fi Smart Switch is the most compact WiFi smart switch in the Sonoff range. Designed to fit behind virtually any wall switch, it adds smart WiFi control to any circuit without replacing your existing switch plate — and works with or without a neutral wire.

• Extreme compact design — the smallest Sonoff WiFi switch, fits in the tightest wall boxes
• No neutral wire required — compatible with most existing wiring configurations
• WiFi connected — remote control via the eWeLink app from anywhere
• Set schedules, timers, and automations with ease
• Supports external switch input for manual on/off control
• Compatible with Amazon Alexa and Google Home voice control
• Works with Home Assistant via eWeLink integration
• Supports DIY mode for local API control

Extreme size, extreme capability — the Mini R4 fits where no other WiFi switch can.