4th gen thermostat and 1st gen sensor are they compatible??

[Robbiepope]

I have a new furnace and 4th gen. Doent go above 20c got 1st gen sensor 3pk. There's a dash beside each one in google home. 

[GeremiG]

Hi @Robbiepope!

Thank you for posting in the community. I'm happy to confirm that your Nest Learning Thermostat (4th gen) works perfectly with the Nest Temperature Sensor (1st gen). The temperature sensor will help your thermostat get a better sense of the temperature in different rooms of your home, allowing it to adjust accordingly and keep you more comfortable. For setup instructions, check out this guide: How to set up and install the Nest Temperature Sensor in the Google Home app.

If you have any questions or need help, please don't hesitate to let me know.

Best regards,
Geremi

[Robbiepope]

So I have the nest thermostat and 1st gen sensor. I see all 3 sensors but there's no information no battery info after I changed new batteries also.  

[GeremiG]

Hi @Robbiepope !

Thanks for the update. I understand how important it is to keep track of your Nest Temperature Sensor's battery information. This information isn't available within the app.
However, you should receive a notification on your phone and be alerted in the Google Home app or Nest app when the battery in a sensor is low. You should also get another notification when your battery is critically low, so there's plenty of time to change the batteries before your sensor stops working.

Your thoughts are valuable to us as we're always working to improve the Nest experience. Please share your thoughts directly with our development team using this feedback form. Your input will help us prioritize features and better serve our diverse user base.

If you have any other questions, please let me know.

Best regards,
Geremi