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Logitech Harmony 665 Advanced Remote Control - YouTube
Amazon.com: Logitech Harmony 665 Advanced Remote Control, Universal Entertainment Remote, Replaces up to 10 remotes with Guided Online Set-up and Interactive Help (Renewed) : Electronics
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Harmony Software
Amazon.com: Logitech Harmony 665 Advanced Remote Control - Discontinued by Manufacturer : Electronics
Harmony 665 User Manual
Logitech kills off Harmony universal remotes — but there's a little good news | Tom's Guide