N.
I had this for my second child and absolutely loved it and highly recommend it. It helped put my mind at ease regarding SIDS and all I can say is that I wish I had gotten it for my first child as well.
There are only 2 issues that may be bothersome in my opinion. One is the sensitivity level. You may have to adjust it so that you don't get a lot of "false" alarms. No biggie though. Once I adjusted ours to the proper setting, the false alarms were all but eliminated. The other, and it's just a habit you have to get into, is remembering to turn it off when you take the baby out of the bed. I would take my son out of the bed, go into the living room, get settled and then the alarm would go off. It takes like 20 seconds, which doesn't seem long, but it's enough time to get from one room to the other, and then you have to go back into the bedroom to turn it off. :-)
Again, highly recommend this monitor. Loved it!!