I already have an Angelcare baby monitor with sensor pad. I would like to get a night vision camera to attach the the cot so I can see if the baby self soothes or is just lying there awake. Ideally, the night vision camera visual would be viewable from my mobile. Does anyone know of any good night vision cameras which don't let off any light which might disturb the baby? Ideally would like to spend less than £50.