Upgrade your home lighting and appliances with the SONOFF BASICR4, a compact Wi-Fi smart switch built around the powerful ESP32 chip. It fits behind your existing wall switch or inside a junction box and turns ordinary lights and devices into app-controlled, voice-controlled smart equipment, all while keeping the familiar feel of your traditional wall switch.
The standout Magic Switch Mode lets you keep using your regular double pole rocker switch to turn the light on and off, while the SONOFF app still controls the device even when the wall switch is off. Add an S-MATE2 or R5 remote and the built-in eWeLink-Remote gateway opens the door to two-way and local control without extra wiring.
Safety is taken seriously: a built-in temperature sensor monitors the real-time maximum temperature to help prevent overheating, deformation, or fire risk, and the unit carries CE, FCC and ETL certification for reliable everyday use.
Ideal for retrofitting lamps, ceiling lights, fans, and small household appliances. Set timers, power-on states, and smart scenes so your home responds automatically to your routine. The compact size fits neatly into standard switch boxes and junction boxes.
Available in several pack quantities: choose the option that matches your project from the drop-down menu.