Hello, I have now bought this baby monitor, risked because a review was super bad and others good. I can say that I bought a good device. The really works on very long distances, even in the basement and in the garage. A man wrote that he was disappointed because the device went on and off. Liebermann, THE MUST ALSO BE SO !!!!!!! baby monitor shall only ON WHEN IN ROOM; In which the child falls asleep sound is, HE registered. I think that's great, then you can not hear the Ganen evening the buzz of other devices, because they are constantly on. So if one hires everything right, everything works well. I am very pleased! Can only recommend!