N00b question. Sensor Off?

I’m new to Home Assistant and raspberry pi’s so I apologize if this is a simple question. I’ve installed a few things on my Hass.io build. I placed my Nest Protect in the configuration file and for some reason, it says it’s turned off and I’m wondering how to turn it on? Here’s an image to help show what I’m talking about: https://imgur.com/a/fE1sjSU

Thanks for the help!