The smart home of the future could be a wee bit smarter with the addition of the Alexa-powered connected intercom system Nucleus announced last week. The Nucleus intercom, which last fall made its debut without Alexa, is a tablet that connects to a home network through WiFi or Ethernet to allow family members to communicate with each other both inside and outside the home. The inclusion of Amazon’s Alexa technology in the $250 Nucleus lets it understand voice commands.