Sonoff S31 Smart Plug with Energy Monitor

The Sonoff S31 Smart Plug combines WiFi outlet control with real-time energy monitoring, tracking power consumption, voltage, and current for connected devices. This feature makes it invaluable for identifying energy-hungry appliances and monitoring costs over time. The plug handles up to 15A loads and features a compact design that doesn't obstruct adjacent outlets.

The eWeLink app displays real-time power usage and maintains historical consumption data, helping you understand and optimize energy use. Overload protection automatically cuts power if current exceeds safe levels, protecting both the plug and connected devices. Scheduling and automation features enable time-based control and integration with other Sonoff devices.

The S31 works with Amazon Alexa and Google Home for voice control, though energy data is only accessible through the eWeLink app. Home Assistant users particularly value this plug for its energy monitoring capabilities, with both cloud and local integration options available. The ETL safety certification and robust relay ensure reliable long-term operation.