Motion and audio sensors: In the old days, parents were forced to endure a consistent ambient hiss from their audio monitors while they listened for their child’s stirrings or cries. Mercifully, many modern baby monitors will stay in “quiet mode” until they detect motion and/or sound, which will trigger an alert, such as activating the handheld video display or pushing a notification to your smartphone.
We took these criteria into consideration, factored in user feedback and reviews from across the Web, and eventually narrowed the list to eight cameras for testing. We used each camera for several months, taking notes on the interface and any difficulties we ran into. We connected each model to multiple routers, and used each from various distances and through walls to test range. We also ran each monitor from a full charge down to zero to check battery life. Finally, we evaluated each monitor's night vision in dark environments. Read more about our tests in our full guide to baby monitors.
It really depends on what you feel most comfortable with. There are audio monitors that allow you to listen to any noise coming from the nursery, vital monitors that track sleep and breathing and video monitors that add sight to sound. Babylist parents overwhelmingly choose video monitors. The security of seeing what your child is up to—like if they’ve gotten tangled in their swaddle, pulled their diaper off or climbed out of the crib—can be worth the extra cost of a video monitor.