SONOFF BASICR4 Wi-Fi Smart Switch The SONOFF BASICR4 is an affordable Wi-Fi smart switch featuring the advanced ESP32 chip for faster and more stable performance. With Magic Switch mode, you can control devices via the app even when the wall switch is turned off. Acts as an eWeLink remote gateway for local bidirectional control with sub-devices such as S-MATE2. Features thermal protection for added safety. Ideal for smart home beginners who want to upgrade their lights, fans, or appliances. Equipped with ESP32-a smarter core, better performance Equipped with the new-generation ESP32 chip, the BASICR4 offers faster response times, more stable connectivity, and improved processing power-all while remaining cost-effective for your smart home setup. Magic Switch Mode-Smart Even When the Wall Switch Is Off Thanks to the unique Magic Switch Mode, you can control your lighting via the app evenwhen the wall switch is off. Enjoy continuous remote access and automation. Built-in eWeLink Remote Gateway-Enable Local Two-Way Control As an eWeLink Remote gateway device, BASICR4 enables pairing with S-Mate2, R5, and other remote sub-devices. Set up two-way or multi-way control and enjoy low-latency local control without relying on Wi-Fi. Group Control-Smarter Management of Multiple Devices Easily group your devices by room or scene and control multiple switches simultaneously via the app. Save time and simplify your daily routines. Certified Safety with Real-Time Overheating Protection Features a built-in temperature sensor that continuously monitors internal heat. It automatically cuts off the power supply in case of overheating, protecting your home from risks such as warping, fire, or contact with live wires. Certified by CE, FCC, ETL, and others.