The 211z only has one output. There were earlier models that supported a 2nd TV in SD over coax. I tried this route but the image quality just wasn't what I wanted.
As the poster above mentioned.. I bought a wireless HDMI adapter.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I have the Wally box which has the RF remote and supports a second remote. I leave one remote in the living area and one in the bedroom or outside. The bonus of the hdmi box is that it support two inputs so it allows us to use the Fire TV or Blueray on both TVs.
It's not the budget option but offer a lot of flexibility and gives you HD quality on the remote TVs.