A baby monitor stands for watchfulness and the urge to stay connected to something fragile. Dream books also read it as listening closely to a part of yourself that needs care.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.