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Hello Robert, The Harmony 665 is an advanced infrared universal remote control. Meaning, it uses line of sight to work. If your cabinet is glass, then it will work fine, but if it is enclosed then it won't. - Richard from Logitech
Sorry, there was a problem. Please try again later.I have my 655 connected to a DirectTV DVR and it is in a cabinet with a glass door in front of it.
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