I’m looking for Zigbee Smoke/CO2 detectors if anyone has any good suggestions I’d greatly appreciate them. Ideally they would be Zigbee but Bluetooth or WiFi would be fine too I’d prefer they not be Zwave because I just don’t want another protocol that requires another adapter and all that goes with it!
Some people have has success with Kidde alarms. See toward the end of this thread: https://community.home-assistant.io/t/kidde-smart-alarms-smoke-co-detectors/
apple homepod mini has a smoke alarm alert that detects the alarm sound, if you just need alerts and not something else, you can just use regular dumb smoke detector.