The past two nights, DD woke up between 3:30 and 4 AM and started messing with it. DH must not have secured it, because she managed to knock it down. It was sitting on top of the rail at the head of her crib, with the wire wrapped several times around the outside so there's little to no slack. The bumper also blocks her from grabbing the wire.
Where do you put the camera?
Re: If you have a video monitor...
Mounted on a wall, pretty high up. It's probably 6-7 feet away from DD, but thankfully it has zoom.
When we are away we usually try to put it on an armoire or some other piece of furniture away from the Pack N Play.