First Alert Device

[jsedillo (J Michael Sedillo)]

Anybody ever seen one of these Firs Alert do-hickeys? Is it a smoke alarm, or a carbon monoxide detector? There was no mention on the device itself.

[cevans (Chuck Evans, CMI)]

https://www.manualslib.com/manual/1196524/First-Alert-Co1210.html

[jsedillo (J Michael Sedillo)]

Thank you