We'll try the open door without monitor tonight. We have one that kicks in at a certain sound level. The problem is DS properly cries out. It just stops after a minute or so because he either re-settles himself or is just crying out in his sleep (I think mostly the latter). If he cries for more than a minute or two we know he needs us and go in.
we only used the monitor when we were downstairs and the kids were in bed. The parent bit sat in the living room which s where we spend the evenings. For night time we just left our bedroom door open and if the cries were loud and urgent enough we would hear them.
I had this problem. It was solved by turning the baby monitor off and leaving our bedroom door open. This means that I do hear the baby if he really gets going, but not if he is just sleep talking or settling himself with a moan.
I have the BT one and it has an option to mute all - which switches off but the lights work, or mute, where it only kicks in at a certain noise level as fairylea said. Ds is a very noisy sleeper so we have it on mute and only hear a real cry rather than general sleeping noise. Its fairly cheap iirc and has worked well for us.
Not quite like that but bt pacifier monitor has a mute button that goes off mute when their cry reaches a certain level of sound. I haven't tried that bit yet as I always have it on for ds who is a little baby but I know the facility is there !
15 mo DS mostly sleeps through, but will often cry for a minute or two in the night before settling himself back to sleep (I'm not sure he even wakes up half the time). We don't want to ditch the baby monitor in case he really needs us and we don't wake, but I'm a light/crappy sleeper and the brief crying out two or three times a night is really messing with my sleep. If we could find something that was slower to kick in it would filter out the brief cries but wake us if we were really needed.