A:AnswerHi there,
No, this is not compatible with your 55" Class - (54.6" Diag.) - LED - 1080p - HDTV. Try this model NS-RMTEXB21 instead.
Gem
Insignia Products
Please visit https://www.insigniaproducts.com/
A:AnswerYes. I found your TV model 43LF421U21 under the compatible product list on this remote
Mary II Insignia Products II Please visit https://www.insigniaproducts.com/
A:AnswerHello Nancy,
Absolutely yes, this replacement remote works for Insignia Fire TV Edition TVs.
Insignia Support,
Merjorie
www.insigniaproducts.com/support
A:AnswerThis replacement remote works with a Toshiba Fire TV Edition TV. To Factory Reset the Remote, press and hold at the same time the DPAD-left, Back (↩) and Menu (≡) buttons for at least 10 seconds. To pair the remote press and hold the Home button. For product support please visit https://www.insigniaproducts.com/email-us
A:AnswerThis replacement remote does not have a dedicated button for Closed Captions.
While watching Live TV from antenna press the Menu button ( ≡ ), then select Captions and Audio. To adjust the Closed Caption settings go: Home > Settings > Accessibility > Closed Caption.
A:AnswerYes, you can pair multiple remotes to your Fire TV Edition TV.
Also, you can download the Amazon Fire TV on your Smartphone to control the TV over Wi-Fi.
