【25A/5500W Highest Output Power】POWR3 has the highest output power to make your high-powered devices smart, or as a single room-meter to measure power consumption.
【Measuring Power Consumption】Keep track of active power, current and voltage of your appliances on App
【Overload protection】Once an abnormality was detected, the power will be cut off to avoid device damage and danger.
【One-tap switch on/off remotely】POWR3 can cut off power wherever you are that can ensure the safety of your appliances and save on hidden electricity bills
【Voice Control】Compatible with Amazon Alexa, Google Assistant, SmartThings, and Alice. Just speak out your command, the smart device can do on/off as you say.
Note: SONOFF DW2 doesn’t come with batteries into the package.
SONOFF T3UK3C TX Smart Wifi Black wall touch switch with Smart Home edge 3 Gang 433 RF Remote Control works Alexa,google home Voice Control IFTTT 
SONOFF MINI R3 16A