I'd meant to post this. On Tuesday the phone rang and the caller identified himself as so-and-so from the Gloucester fire department, I said uh oh, and he said don't worry everything was OK. He said he was in the neighborhood on a call and neighbor alerted him to a beeping smoke alarm. He inspected the house - the door we never use wasn't locked - removed a battery and also commented that the smoke alarm on top of a pile of books along the stairs should be mounted (true - just never could decide exactly where to mount it). We did take a quick trip up and replaced the battery in one of the smoke alarms - and locked the unlocked door. It was too wet to rake leaves so that'll be another time.