Sonoff MINI R4 Extreme Wi-Fi smart switch

A thumb-sized ESP32 relay that fits behind an existing wall switch and makes the light it controls app-, voice- and schedule-controllable. The wall switch keeps working, and detach-relay mode turns it into a scene trigger.

What's in the box

• MINI R4 switch module
• Quick-start guide

Specs

• Connectivity: 2.4 GHz Wi-Fi (802.11 b/g/n), ESP32 dual-core chip; eWeLink app, LAN control
• Works with Amazon Alexa, Google Assistant, Home Assistant (eWeLink add-on) and IFTTT
• Rating: AC 100–240 V, 50/60 Hz, 10 A max
• External switch: momentary, rocker, SPDT, latching and door-exit switches; detach-relay mode; power-on state and delay
• Size: 39.5 × 33 × 16.8 mm; PC V-0 housing; fits standard and mini mounting boxes
• Certification: CE, FCC, RoHS, UL