1-10PCS SONOFF S31 Lite US Smart Zigbee Socket Plug Voice Remote Control Smart Home Switch Works With Alexa SmartThings Hub Description: Sonoff S31 is a compact size 1 gang US standard wifi smart plug with energy monitoring. With the S31 smart outlet, you can keep track of real-time power, current and voltage of your home appliances on the App. You can also measure electricity consumption for a specified period. Besides, you can set threshold power, current and voltage value for your appliances. Once it reaches any of the threshold values, the remote controlled wifi outlet will auto-turn off your appliances. The S31 smart socket provides you 100 days energy consumption historical data (support to export) and electricity bill forecast. Monitor and understand which appliances are consuming the most, then create scheduled or countdown timers to reduce your electricity bill. Power Monitoring, Understand Your Devices Further S31 can track the power consumption of devices to show you which one probably gets your monthly electtricity bill overwhelmed Over-load Protection System Ensure your device works under the rated range,avoid any damage from overvoltage to undervoltage, from overcurrent to overload Mini & Thin,More Space Reserved