A:AnswerHi,
No, unfortunately this TV doesn't work with number pads. The included remote fully controls the TV.
Press the TV button on the remote to launch the Live TV guide, press up or down to navigate through the list and press the center to start watching the highlighted channel.
Alan O. - Insignia Support
A:AnswerHello,
This TV has Bluetooth built-in. You can connect to a supported device by going to: Home > Settings > Controllers & Bluetooth Devices.
Eduardo L - Insignia Support
https://www.insigniaproducts.com/contact-us
A:AnswerFor example, you can say -Tune to channel 5.1-
For more Alexa commands to control your Fire TV Edition television, please visit:
https://www.amazon.com/gp/help/customer/display.html?nodeId=202174250
David M. - Insignia Support
A:AnswerNo, you can't use a set of bluetooth headphones/earbuds for one person listening while allowing other viewers in the room to hear the internal speakers.
David M. - Insignia Support