So, does it sound like whoever did this was familiar with baby monitors and knew it would make a loud noise?:waitasec:
If the baby was taken by someone who wanted a replacement baby...then yes. Or even someone who has a relative with a baby, or a friend with a child.
After my son was too old to need the baby monitor anymore, my kids played with it. They used it for everything from a pretend office intercom to their own version of spy games with the neighbor kids.