Amazon on Tuesday unveiled a refreshed lineup of devices optimized for home security and its new artificial intelligence-infused Alexa+ voice assistant.

At an event in New York, Amazon showed off Echo speakers, Fire TV streaming devices, a new Kindle reader and improved Ring and Blink cameras. 4

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Amazon is trying to drive interest in the new Alexa, which it spent years updating with AI for better personalization and a more conversational tone.

The Seattle firm said its new Echos, including smaller Dots and Show devices with screens that range from $99 to $219, will be enabled to work with Alexa+ and feature new silicon chips for faster processing. 4

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Amazon also rolled out improved cameras for its Ring devices for better home security, including facial recognition to help

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