While buying an audio-only monitor in 2018 is slightly akin to buying a flip phone, the Philips Avent has pretty much all the same features as top-of-the-line camera baby monitors, sans camera. Even better, it uses DECT (Digital Enhanced Cordless Communications) technology to guarantee zero interference ⏤ so it won’t get crossed with other signals in your house and/or your neighbor’s cordless phone. The Philips has a range of more than 90-ft inside, a 10-hour battery life, and it uses a “cry mode” so you’re only alerted to real cries for attention rather than background noise. As for extra features, it includes a night light, in-room temperature monitor, and plays lullabies ⏤ if only you could just see the baby.
Will Greenwald has been covering consumer technology for a decade, and has served on the editorial staffs of CNET.com, Sound & Vision, and Maximum PC. His work and analysis has been seen in GamePro, Tested.com, Geek.com, and several other publications. He currently covers consumer electronics in the PC Labs as the in-house home entertainment expert... See Full Bio
In addition to monitoring your kids, you can use the camera’s two-way talk to soothe your child (smart for when you sleep train), and it also comes with Intelligent Motion Alerts to let you know if something’s happening in the room. You can also choose to record video footage on an SD card (not included) if you want to use this product as a nanny cam.
Look for a monitoring system that is a good fit for your home and lifestyle. For example, if you’re in a small apartment in a busy city, having a monitor that has a long range won’t be as important to you, but one that screens out background noise will. For parents that frequently travel or work long days, being able to check on your child from anywhere and talk over the audio can help keep you connected. But, for those who are with their kids most of the time this might not matter much. The point is, consider what will make parenting easier and your family happiest and you can’t go wrong.
Beyond security, Wi-Fi monitors have other disadvantages. In our tests, connectivity was more of an issue with Wi-Fi monitors than it was with RF monitors. We tested our Wi-Fi monitors on two separate routers and consistently had problems—we’d often lose the connection some time in the night and not even realize that the monitor had disconnected until morning. This happened with all three Wi-Fi models we tested. We never really felt confident relying on any of the connected monitors overnight, despite the fact that the modem and router were literally on the other side of a wall from the monitor. Other owners (like this one) have had the same issues.
This baby monitor system lets you listen in on your child with a “smart audio unit,” or you can install the Safety 1st companion app to turn your smartphone into a video display, complete with motion and audio alerts. While it lacks some of the nonessential features of the Arlo Baby, we give it high marks for its excellent video quality, customizable alerts, and its ability to grant regulated camera access to other caretakers.

The Nest Cam isn’t a dedicated baby monitor, but an all-around home protection device. Besides aiming the camera at the crib, you can also use it to keep an eye on the nanny, the dog or your empty home while you’re away. The video camera can be set up anywhere, and you can watch the live streaming from your smartphone. It also has two-way communication so you can soothe your little one to sleep, even if you’re offsite. If the device senses motion or sound, it’ll send a phone alert or an email to you. Missed what happened? From the app, you can view photos of any activity that took place over the last three hours. (There are Nest Aware subscriptions available that provide access to 5, 10 or 30 days of recordings, for $5, $10 or $30 a month, respectively). The picture quality is super sharp, too.

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