Snuza Snuza go!
I bought this when we put our son into his own room at 2 months and I wanted some peace of mind as you can't see the breathing on the baby monitor. I really loved using it as it really gave me reassurance that he was breathing if the alarm wasn't sounding. We only got a couple of false alarms when the alarm slipped off the nappy but it wasnt loud enough to disturb baby. Stopped using it when he started rolling and would fall off but will start using again with new baby soon.