SONOFF Mini R4 Extreme Wi‑Fi Smart Switch

Description

The SONOFF Mini R4 Extreme Wi‑Fi Smart Switch is an ultra‑compact smart controller that turns your traditional wall switch into a fully controllable smart device. Designed with a tiny form factor (approx. 39.5 × 33 × 16.8 mm), it fits easily inside most mounting boxes — including EU/86/120 type boxes — making hidden installation simple and discreet.

Powered by a fast ESP32 chip, the Mini R4 connects directly to your 2.4 GHz Wi‑Fi network, allowing you to control lights and appliances remotely via the eWeLink app from anywhere. It supports smart scenes, timers, schedules, and automation triggers to integrate into your smart home ecosystem.

One of its standout features is External Switch Control, supporting momentary, SPDT, latching, door exit switches, and dry contact sensors for flexible connection options. The “detach relay” mode separates the external switch state from the relay output — allowing app control even if the physical switch is off.

The Mini R4 also functions as a gateway for eWeLink‑Remote, enabling local control from compatible remotes (like S‑MATE or R5) without Wi‑Fi — ideal for advanced smart scene setups.

Whether you’re automating lights, fans, or other household devices, the Mini R4 provides flexible, reliable Wi‑Fi smart control for everyday smart home upgrades.