You might prefer one that has lights as well as sound. All the audio monitors we rated had this feature. The Philips Avent DECT SCD510, which sells for about $120, has a series of small LED lights on the parent monitor. The louder the sound in your baby's room, the more lights go on, so you'll notice his crying even with the unit set on mute. Audio monitors are generally less expensive than audio/video models.
As you'd expect, the talk-back functionality and audio quality on the VTech are great—easily better than the rudimentary talk-back features on our video monitor picks. With the battery lasting about 19 hours on a full charge, this monitor has the strongest battery life of any in our test. Rated to a range of 1,000 feet, it exceeds the range of our pick (700 feet) both as advertised and in practice during tests.
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.
The dedicated monitors did not score as well as the Wi-Fi products for features. It isn't that they don't have features, it's just that they don't offer as many, don't have features that make the camera easier to use or the features they have don't work that well. All of the dedicated monitors have 2-way communication, but they all also can only be viewed on the parent device that comes with the monitor. Some offer temperature sensors and lullabies, but most of them don't provide motion detection or great zoom. The highest score for features for the traditional video products was 5 of 10. Two monitors managed to earn the 5 rating, with the Infant Optics DXR-8 being the highest ranked overall with a feature score of 5. However, this monitor did not score well overall, or in key metrics, we think are essential for a good video monitor. So despite having a high score for features, we still would not recommend this monitor to a friend.
General Usability: This one is two-fold. First we wanted to make sure each monitor could perform under bright, dim, and no light; and pick up even the faintest sounds. Then we looked at how easy it was to use the monitor. Could we adjust the screen brightness, or were we going to be half-blinded when we picked it up at 1AM? Was the monitor voice-activated, or does it pick up white noise in the background? How sensitive were the alarms, and did they sound like a baby-waking screech or a soft ping?
Ease of use may not seem like a big deal because once you know how to use something, it won't seem that hard, and after you use it for a while it can feel intuitive even if it isn't. However, with this type of product, there can be a learning curve depending on what kind you choose and how many features it has. While the dedicated monitors were plug in and go options that even grandma can manage, some of them took a little more skill to navigate and learn. The Wi-Fi options, on the other hand, do require some knowledge of technology and the way apps work. With all of them, you will need to set up the camera with your computer or another device, and you will need to set up an account and be able to manage things like Wi-Fi passwords and various settings inside the application. While this may seem like no big deal to some parents, it could be challenging for those that are less tech-savvy.
We tested monitors daily over a period of several months, in three houses: one nearly 100 years old with plaster walls, plus a newer home with standard drywall construction, and a two-level 1960s home with a driveway on another level from the kids’ rooms. We tried the cloud-based monitors with two routers to be sure that any connection issues were with the monitors themselves and not the Internet connection.
We wanted to recommend an inexpensive video monitor, but their flaws were so significant that we decided we’d rather spend less on a quality audio-only monitor like the VTech DM221. This is a well-reviewed best seller in the category, and it has crisp sound and better talk-back functionality than the best video monitors we found, as well as a longer range and better battery life than our video picks. It easily beats out its audio-only competitors for various basic reasons like being cordless, rechargeable, or less expensive.
Gone are the days of silently peeking into the nursery to check on your napping baby and then, whoops, accidentally waking them up (“No, no, please no!”). A baby monitor uses a camera to watch over the crib, while you carry a handheld device that lets you know what’s going on with your child at any given moment, no matter where you are in your home. There are also other monitors that track sleep or breathing either with a clip or sock.