What's Required? - Nothing! This product works out of the box with the free ‘Philips Hue Bluetooth’ app. Simply plug in your new Hue Go and connect to the Bluetooth app for in room smart lighting control! Perfect for your bathroom: set individual accents and create a decorative light on the ceiling PERSONALISED LIGHTING: Choose from a variety of white tones from cool to warm light to give a room the desired ambience. For the full smart home experience throughout the home: expand your system with the Hue Bridge (sold separately) and discover many other functions