There isn't a product in Google's range that can do that currently. It would require a hardware change/update so can't be added to existing Nest Protect models via an update. I haven't seen any news about new models, either unfortunately.
Just wanted to jump in here to check to make sure that you saw the response from davidking. Shoutout and huge thank you to davidking for the help here. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.
It looks like we haven't heard back from the OP so I'm going to go ahead and lock the thread. If you have any further questions or concerns, feel free to create a new thread.
