Device That Warns of a Guest Arriving at a House
Puzzle 16 of Famous Streets Easy Pack
Question is: Device That Warns of a Guest Arriving at a House
and the answer is: DOORBELL
Word Meaning:
DOORBELL — A bell, buzzer, or chime device mounted on or adjacent to a door's exterior, meant to be rung by a visitor to announce one's presence.
Definitions from Wiktionary.