not the parent, but when my nest protects died i switched to dumb ones. all co2 detectors expire after ten years, nest decided the appropriate action is to just brick it when they were ten years old. the only feature i really used was using the app to silence it when cooking got smoky. but theres very few options for smart ones, lack of interconnect compatibility got frustrating if i wanted to mix smart and dumb, and it would have easily cost twice as much(i have 6 detectors).
ive considered connecting the interconnect wire to my esp32 (that replaced the security system) and get it pushed into home assistant, but without the ability to silence, a push notification that it is going off just didnt seem worth it
ive considered connecting the interconnect wire to my esp32 (that replaced the security system) and get it pushed into home assistant, but without the ability to silence, a push notification that it is going off just didnt seem worth it