Spouses frequent night wandering at night ruining sleep

Hi,

A friend of mine has a spouse who has always had a fetish for making sure doors are locked. With Alzheimer’s he gets up 5-6 times to check.
She has an alarm in her bedroom, but it goes off at least 5-6 times during the night and she gets no sleep.

Are there other devices out there? She is getting the big Stop Signs for several doors.
Anyone had experience with the bed pads that allow you to record a message that will calm the person down and get them back to bed without blaring her awake? ( if that did not work, the door alarm would still go off )
Thanks