SONOFF? POW R2 AC90-250V 15A 3500W WIFI Wireless APP Remote Control Switch Timer Socket Power Monitor Current Tester Works with Amazon Alexa Amazon Tap Google Home Nest Assistant IFTTTOverview: Sonoff Pow R2 is a 15A WiFi smart light switch that allows you to remotely manage and control your appliances and monitor your home energy usage. The WiFi light switch works like a power monitor, which allows you to keep track of 99% accurate real time current, voltage and power on your app. The power switch can protect your appliances from overload. What you need to do is to set threshold values for the current, voltage and power. It works