From LEDs to thermostats and security gadgets, we’ve decked out the CNET Smart Home with all sorts of connected tech. The Amazon Echo — a Wi-Fi-enabled speaker with voice control capabilities via Alexa, the Echo’s ever-present robot assistant — is at the center of these updates. That’s because Alexa is accessible, an easy entry point into the wild world of smart devices. Just say, “Alexa, turn on the lights,” and she will. No app, no hub, no fuss.