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It does work with the Spectrum cable box. Mine is an Arris, and I entered the model number on the back of the box. I can't verify the TCL TV, but I would be very surprised if it didn't work.
Sorry, there was a problem. Please try again later.Hello Mike, to see if your devices are compatible with the Harmony 665 remote, I have attached a link to check compatibility. Thank you for the question, have a great day. https://support.myharmony.com/en-us/compatibility
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