Sensor is offline

I have a quick question. One of my windows sensor states its offline. Does this mean it needs battery replacement? I just had the system for 6 months and I also have a sensor that fell off and wont stick. What can i use to restick it or does ring provide me with a new adhesive and battery.

Hi @jrodr700. Double-sided sticky tape can be used to hang the Contact Sensor, as that is what is included in the original box. You can also find some basic troubleshooting steps for your Contact Sensor in our Help Center Article here. If those steps don’t do the trick to get your Contact Sensor back online, you can reach our support team at one of the numbers available here. We’re taking additional steps to protect our team and help reduce the spread of COVID-19, so this has resulted in longer than normal wait times. If you are outside of the US, please read our response to COVID-19 here to see how to contact support.