Now there is no need to touch any phone, tablet, switches or speak: simply enter your room to turn on the lights and leave the room to turn off the lights</br>The hue motion sensor requires no wiring, providing the freedom to place it where you want: put it on a bookshelf, side table, cabinet or mount it on the wall</br>The hue motion sensor is easy to install. It's battery powered (2-aaa)and completely wireless</br>Free standing with an adjustable direction and a long battery life of 2 to 3 years</br></br>Product Description</br></br>The Philips hue motion sensor provides an effortless way to turn your hue lights on or off when you enter a room. The discreet, adjustable sensor can be placed anywhere in your room. With a built in ambient light sensor, your lights will only come on when they are needed.</br><br/>http://www.amazon.com/gp/product/B01KJYSOGI