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.
I have purchased SO MANY monitors, and this is the one we're keeping! We tried AngelCare, Summer Infant, and VTech monitors (multiple models), and the signal wouldn't quite reach from the nursery to our bedroom with any of them. This one not only reaches with a strong signal, but it even works on our patio outside! No bells and whistles like some of the others (no wide angle lens, picture quality isn't crystal clear), but it has everything that was important to me (temperature sensor, sound-activated mode, long range, talk feature). Added bonus - it's super lightweight and thin, so traveling with it will be so easy!
BabyPing also works over 3G/4G and Wi-Fi networks. With easy set-up directly on your mobile device (no computer necessary), the BabyPing app enables parents to be one tap away from seeing and hearing what their baby is up to. The unit's Smart Filter ensures that all you hear is the baby, not background noise in the house. There is no functionality to talk to the baby through the app, but what differentiates BabyPing is its password-protected double-layer encrypted security, which gives parents the ability to give access to only those they wish to. BabyPing offers night vision to give parents full visibility into the dark nursery without disturbing the sleeping baby.
You start running into problems when you download the third-party app that allows for monitoring via your mobile phone. In theory, this should add all sorts of features, like push notifications, motion and audio sensing, and video recording for later viewing. And Motorola would be one of the only companies offering both a base station and app. The problem is, the app's connection is so intermittent, I could barely even try out those features, let alone use them with any sort of consistency.
Environmental sensors: Many monitors include the ability to set thresholds and upper limits for room temperature and/or humidity, and they'll alert you when these ranges are exceeded. While they can't control the temperature or the amount of moisture in the room's air, this feature can help you improve your child’s comfort, which will help them get more restful sleep.
By default, Arlo Baby records in 720p resolution, though you can switch to 1080p if you prefer. You can also adjust the field of view and fine-tune notifications on what triggers an alert. You do have to position the camera manually, however, and the gap between getting a notification on our phone and actually being able to jump to live video was a little laggy for our tastes.
From a pure imaging standpoint, night vision is vital for watching your baby sleep from another room, and is standard for most baby monitors. Motorized pan and tilt (which lets you swivel the camera from afar) isn't quite as common, but is very welcome if you have a toddler and want to scan an entire room. High-definition is a nice plus, but you don't need the highest-resolution sensor to keep tabs on your baby—most of the monitors we test use 720p cameras rather than 1080p.