The Wi-Fi enabled WeMo Light Switch allows you to turn lights on and off from anywhere - from across the house, from the backyard, or from the other side of the world. WeMo Light Switch replaces a standard light switch in your home and can be controlled remotely with an Android smartphone or tablet, iPhone, iPad, or iPod touch. It works with your existing Wi-Fi network and anywhere your smartphone or tablet has an Internet connection (3G or 4G LTE). Easy for most Do It Yourselfers. Not only can you program your lights to turn on or off at specified times, you can also set them to respond to the sun. Simply enter your city name in the WeMo App and then program your porch lights to turn on at sunset and off at sunrise. The sunset and sunrise times update every day, so whatever the season, your lights will come on when you want them to. You can also combine sun and time rules - for example, you can program your lights to turn on at sunset and off at 11pm every day. The WeMo App automatically adjusts for daylight savings.