The Sonoff POWR3 is a high-power smart switch designed to give you remote control and detailed energy insights for your most demanding home appliances. It handles a maximum load of 25A or 5500W, making it a reliable choice for managing heavy-duty equipment like water heaters, HVAC systems, electric heaters, pumps, and washing machines. By connecting to your 2.4GHz Wi-Fi network, the device allows you to monitor active power, voltage, and current in real time through the eWeLink app, helping you understand exactly how much energy your appliances are consuming. Safety is integrated into the design with built-in protection against overloads, over-current, and over-voltage to keep your electrical system secure. The unit is housed in a fire-retardant PC V0 plastic casing and measures 162 x 122 x 45.5 mm, weighing 528 g. For those who prefer hands-free operation, it integrates with Amazon Alexa, Google Assistant, SmartThings, and Alice, allowing you to manage your high-power devices using simple voice commands.