There's the first alert onelink. May have the same issues though, it has a microphone and an alexa integration. Also support homekit, unlike the Nest Protect.

Are there any best practices for using a device like this but not having it communicate with the wider world? I.e. It can communicate with you via a homekit hub, but can't connect outside your LAN

https://onelink.firstalert.com/withalexa/