Possible (Probable?) Scam
My caller ID showed this call from "Service Department" from an area code that is not one of the local ones.
The recorded message starts out with - an offer for a 'free alarm system installed in your home . . . for free' in exchange for the 'company' putting a small sign in our yard. I didn't listen to the rest of the message.
Seems like a good way for strangers to get a good layout of one's home and property!!