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).