If you want to know everything about your baby, down to the heartbeat — the Angelcare AC315 is our top motion-sensor monitor. The sensor mat slips under the mattress in your baby’s crib, and if it detects no movement after 20 seconds, it sends a loud alarm to the baby and parent units. Its touchscreen can be a little finicky. The Baby Delight is less prone to false alarms; however, our parent testers were concerned that the small clip-on sensor might be a choking hazard.
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.
As you’d expect, the talk back functionality and audio quality in general are great—easily better than the crude talk back features on our video monitor picks. With the battery lasting about 19 hours on a full charge, this monitor had the strongest battery life of any in our test (not entirely a fair comparison, as this is the only one with no screen to power). 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.
Don't be fooled by its cute looks and adorable green bunny ears: Netgear's Arlo Baby is a very capable baby monitor that delivers sharp video of your nursery to your smartphone. The Arlo Baby includes features such as night vision, temperature and air quality sensors, a color-changing nightlight and a speaker that can play lullabies. All of this is very easy to manage thanks to a well-designed mobile app.