Whether your old switch controls a roomful of lights, chandeliers or a fan, replace it with the Merkury Innovations Wi-Fi Light Switch to control by touch, app or voice using Amazon Alexa, Microsoft Cortana or the Google Assistant. The smart switch installs as easily as a traditional light switch and connects to your home Wi-Fi in no time through the Geeni app. The app also lets you manage connected fixtures with your smartphone or tablet, including setting schedules.