I LOVE my babysense. I previously used it when nannying so for three years and now i have one for my own bub. Lots of mums complain that their babies roll off other brand sensors but i have never had this problem. There are two huge sensors so it covers nearly the whole cot area. flashing green light lets you know they are breathing and a warning for the batteries lights up too. cant recommend this enough, it helped me sleep knowing my babe was safe.