I'm not getting a monitor (we have a small place) however I have a question, out of curiosity...

Re. the movement sensors, do they send an alarm if there is NO movement, or if the baby stirs? I have heard of a few mothers practically throwing them out the window in frustration, and I'm not sure what they are supposed to do?
It sounds an alarm if there is no movement for a certain time (it is very sensitive and picks up breathing movements). There is also an awful 'click' noise that it sends off to hear that baby is moving, but you don't have to have that switched on. It drove me BALMY too!