We never had a monitor, so nope Our bedroom's next door to Riv's though, so you can't miss him if he's upset.
He wakes in the night, I'm certain of it, but (apart from last night) he resettles himself. We have his door shut too.
We have friends who have their part of the monitor in the middle of their house, so they aren't disturbed by their daughter's snuffling and singing to herself, but they hear the monitor if she's crying. Pretty clever I thought!