The Niko Hue Pure White Dimmer Switch is a smart light switch with a modern look. You connect this wall switch with the Philips Hue app. This is how you set what the buttons should do the moment you press them. For example, turn your lights on and off, dim them to a predetermined point, or turn on a scene. You set 2 actions per button: 1 with a short press and 1 if you hold down the button for a long time. It is not necessary to supply the switch with batteries or mains power. The required energy is generated by the movement of the buttons while pressing. This way you place this button wherever you need it.