I had false alarms ALL the time once DD was moving - she always ended up in the very corner of the cot. We only had one sensor pad though, and the alarm never woke her.

I couldn't use the ceiling fan because it sensed that as breathing, so I set up an upright one when we needed one. It's nice to know they are so incredibly sensitive though.

You won't be forgetting to turn it off for long - it will train you well!