The Wireless Philips Hue Smart Button allows you to personalise your lights in multiple rooms with a click of the button. Turn all of your smart lights off when you leave the house or set custom light settings for different times of the day. This installation-free smart button can be mounted or stuck anywhere in your home. The portable, magnetic button can be removed from its wall plate for control anywhere in your home. A Philips Hue Bridge (sold separately) is required for initial setup. This button allows for multi-room control.