The Sonoff Basic R4 is a versatile Wi-Fi enabled switch designed for smart control of electrical appliances. Enables wireless control of connected devices via the eWeLink app on your smartphone or tablet from anywhere in the world. The switch can be connected to a variety of electronic devices, such as lamps, fans, heaters and more. Supports voice control through platforms such as Amazon Alexa and Google Assistant, increasing ease of use You can create schedules to automatically activate or deactivate connected devices, saving energy or simplifying everyday life.