The inputs on the back of the tv include rca, hdmi and usb. The tv can also connect via a wifi network. If your security camera supports one of these connection modes you should be fine.
#2 Does it work with the bell fibe TV app? is it android TV?
No it isn't an android TV bit an app I find very useful is Web video caster. It permits you to cast from your cell streaming videos and more.
#3 If I hang it on my wall do I need to plug any wires in?
Power cable would still need to be plugged in. And if you have a cable subscription, you’d need to plug any necessary cable into it.
The remote is blue tooth therefor you can download the TCL Roku app to your cell and use it as a remote as well as plug in headphones to your cell and listen through the headphones or wireless earbuds.
#5 Can I please android phone on this TV? and can this tv customize the size?
It will play on your android phone and you can get Echo to control it I believe. Your settings will change picture.
After you plug your TV into the wall and turn it on, the TV will walk you through the steps on how to get it set up.
#7 Anyone know the roku remote code for a bell satelite pvr box?
I think my friend put in the code from my password I know a guy who knows all about the tv he will have the answer for you I will get back to you so I know for sure