The 2nd Generation Echo Plus features premium speakers for powerful 360° sound, and a built-in Zigbee smart home hub and temperature sensor. Just ask Alexa to play music, answer questions, make calls, and provide information, news, sports scores, weather, and more. With the built-in hub, starting your smart home is easy. Echo Plus connects to and controls smart lights, locks, plugs, sensors and more. Just power on compatible products and say, Alexa, discover my devices.? Echo Plus will automatically detect and set up devices, so you can control them with your voice. This simple set up process works with dozens of compatible smart home devices that use Zigbee. Echo Plus also supports every Works with Alexa smart home device. With a gray color, the Amazon Echo Dot (2nd Generation) coordinates well with your home or office décor.