Why does MARY trigger a breathing alarm even though my baby seems to be breathing normally?

Breathing pauses recognised - unwanted alarm?

sticklett support

Last Update a year ago

MARY by sticklett is designed to detect even the smallest changes in breathing and inform parents at an early stage. If an unwanted alarm is triggered, this does not automatically mean a malfunction, but can be due to the following causes:


  • Baby is lying on its belly → Limited detection of breathing If your baby is sleeping on its tummy, breathing movements across the chest can only be measured to a limited extent. MARY may then not recognise clear breathing movements and trigger an alarm.


💡Note: Babies should not sleep on their belly in the first few months, as this can be a risk factor for sudden infant death syndrome (SIDS).


  • MARY clothing is too big → No optimum body contact
    If the clothing is too loose, MARY the ladybird cannot fit close enough to the body and therefore cannot optimally detect breathing movements. This can lead to misinterpretations and alarms.

💡 Solution: Make sure that the MARY clothing fits snugly without pinching - this allows the system to work reliably.


  • Irregular breathing → Unusually long pauses in breathing
    Babies and small children often breathe irregularly and can pause for up to 24 seconds without it being dangerous. MARY alerts you if a pause in breathing lasts longer than 20 seconds. This is the medical reference value. Breathing pauses longer than this are considered unusually long and are also referred to as sleep apnoea.


💡 Important: Even if your baby shows no other symptoms (blue colouring, floppy, etc.), it may be useful to continue monitoring the breathing pattern. If you are unsure, talk to your paediatrician.

What should I do if an alarm is triggered?

  • Check your baby's breathing and whether it is responding normally.
  • Check your baby's lying position.
  • Check that the clothes fit correctly and are not too big.

  • If unwanted alarms occur frequently, get in touch with us
  • If you are unsure, talk to your doctor.

MARY by sticklett is your reliable guide to keep your baby safe during the first few months. Unwanted alarms are not the same as incorrect functions - they are a sign that MARY is doing exactly what it was designed to do: Staying alert when it matters.

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