You can set up a replacement Voice Remote for a Chromecast with Google TV that has already been set up.
- Turn on your Chromecast with Google TV.
- On the back of your Chromecast with Google TV, press the button.
- Insert 2 AAA batteries in your new Voice Remote.
In most cases, your remote will pair automatically after you insert the batteries. If it doesn’t, follow the steps on the TV screen, or press and hold the 'Back' and 'Home' buttons on the remote for three seconds.