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If you compare the Arlo Pro 3 with Pro 2 camera, the Arlo Pro 3 camera has a full duplex audio with echo and noise cancellation which means you can have a clear conversation through your Arlo camera. While Arlo Pro 2 is half duplex only. Please check this article to learn more about their difference : https://kb.arlo.com/000062286/. ^RM
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