【Equipped with ESP32 – Smarter Core, Better Performance】Equipped with the new-generation ESP32 chip, BASICR4 delivers faster response, more stable connectivity, and enhanced processing power — all while keeping it cost-effective for your smart home setup. 【Magic Switch Mode – Smart Even When Wall Switch is Off】Thanks to its unique Magic Switch Mode, you can still control your lights from the app, even if a traditional wall switch has been turned off. Enjoy continuous remote access and automation. 【Built-in eWeLink-Remote Gateway – Unlock Local Two-Way Control】As a gateway device for eWeLink-Remote, BASICR4 lets you pair 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 app. Save time and simplify your daily routines. 【Certified Safety with Real-Time Thermal Protection】Features a built-in temperature sensor that continuously monitors internal heat levels. Automatically cuts off power in case of overheating, protecting your home from risks like deformation, fire, or exposure of live wires. Certified by CE, FCC, ETL, and more.