Some audio/video monitors filter out "normal" sounds and motions. The receiver is supposed to turn on only when your baby makes an unusual motion or sound, such as crying or rolling over when he's waking up from a nap. This feature is designed to extend battery life, although the receiver should be docked for overnight monitoring to keep the battery charged. We haven't tested any models with this feature, so we don't know how well it works.
It uses 2.4GHz FHSS technology that offers a private connection between the monitor in your baby's room and the dedicated viewer in your hand. The FHSS connection should minimize interference, and most reviewers say the audio is clear. In BabyGearLab's testing, the reviewer found that the Phillips AVENT had the best audio signal of any of the monitors it tested.
The VTech DM221 audio monitor is the best choice in the category—it's consistently a best seller at multiple retailers, with thousands of positive customer reviews. Losing video is a major sacrifice, of course, but we could see this monitor being a good choice for parents of toddlers who are considering replacing a failing monitor, or people who want a monitor only so they can hear their kid crying out from a distant bedroom.
The Wi-Fi monitors all have lower EMF readings than the dedicated options with the lowest average EMF readings being 0.87 for the LeFun C2 720P Wi-Fi and 0.92 for the Nest Cam Indoor Wi-Fi with the reader 6 ft from the camera. The lowest average value for the dedicated monitors at 6 ft is 1.89 for the Infant Optics DXR-8 and 1.91 for the Philips Avent SCD630.
You can get the same system, with a traditional monitor screen that’s slightly smaller at 4.3 inches, for cheaper. If you’re interested in having two zoom cameras or an app that lets you see your baby while away, Project Nursery offers those configurations as well. You can also record video and take photos with it as well (requires an SD card sold separately).
After testing more than half-a-dozen mounted cameras that beam live video from a nursery, the best baby monitor we've tested is Netgear's Arlo Baby. Netgear's baby monitor packs in a number of must-have features such as clear 1080p video, two-way audio and a host of sensors. Everything's easily accessible from a well-organized mobile app that puts the Arlo Baby's controls at your fingertips.
The DM111 is a basic bare-bones sound option that does exactly what a sound product should do. It relays the sounds from your baby's room to the parent device with no muss no fuss and good sound quality. With a simple plug and play design, it is hard to mess up making it a great choice for parents who aren't technology savvy or for grandma who might find more complicated products frustrating. This product is the cheapest option in any of our reviews for monitoring products, but you won't be sacrificing sound quality or usefulness for the price.
The Nest boasts some impressive hardware specs, such as true 1080p/30fps video and a 3-megapixel camera sensor. Setting up the Nest Cam specifically to look in on a 2-year-old at night, we found the video quality on Nest's camera to be sharper and more detailed than on any baby video monitor we tested. The Nest Cam includes push-to-talk features as well as alerts triggered by motion or sounds. And when your child is past the age when you need a nighttime monitor, you can repurpose the Nest Cam to check in on other parts of your home.
If you want to be as streamlined as possible and happen to have extra Apple devices hanging around, the Bump recommends the Cloud Baby Monitor app, which turns your iPhone, iPad, Apple TV, Apple Watch, and even your laptop into a secure Wi-Fi baby monitor. Use one device in the nursery as a camera, then have high-quality live video and audio transmitted to a secondary device, or even a third or fourth. Using the “parent unit,” you can talk to your child through two-way video and audio, turn on lullabies or white noise, and adjust the night-light on the other side. The app will also alert you to any noise and motion occurring in the other room.
If all you want is a no-fuss audio monitor, the Bump and Baldwin both recommend VTech’s DM221 audio monitor, which consistently garners a lot of accolades. Using digital audio technology, the DM221 offers clear audio transmission and eliminates the crackle of analog models. A two-way intercom allows you to talk to your baby, while a five-level sound indicator can visually alert you to cries from the other room. The transmitter also features a soft night-light for your child. And don’t sleep on its compact size, which makes it perfect for travel.
This monitor is known for its zoom lens, included in the box, that lets you see your baby up close even if you have to position it farther away from the crib. You can use the monitor to remotely adjust the camera, and you don’t have to worry about plugging the monitor in overnight—it can sit on your nightstand for up to 10 hours in the power-saving mode (similar to sleep mode on your computer, but it still provides sound monitoring while the display is off) and up to six hours with the display screen constantly on.