My Nest smoke alarm actually justified its value a couple of weeks ago: We were out in town when it let me know that there was CO in the house. We were able to

My Nest smoke alarm actually justified its value a couple of weeks ago: We were out in town when it let me know that there was CO in the house. We were able to rush back and turn off the leaking gas stove before things got out of hand. I think the peace of mind that this now gives me is extremely valuable.