DS 5wo and very small, so not very loud crying, and I would like to see if he will fall asleep using white noise so need to be able to hear him over that, he is upstairs in the room furthest from kitchen - safest to get another monitor that is close to him yes? Sorry if this seems a stupid question but if he is upstairs then I'd rather hear too much rather than too little. This is mostly for use in evening when I'm cooking etc. 2 monitors seems a bit bonkers but DD still waking a lot so need to hear both.