To save on battery life, some audio/video models only turn on when the baby makes an unusual motion or sound. Some models come with a motion-detector pad that fits under the crib sheet. This type of motion sensor is intended to prevent SIDS. Sensitive enough to detect changes in breathing, an alarm sounds if there is no movement after 20 minutes. However, if the baby simply rolls off the pad, the alarm may sound.
We wanted to recommend a less expensive video monitor, but at any price notably lower than our pick, every product we tried had such serious problems—usually, poor video quality and ongoing connection issues—that we feel a higher end audio-only monitor offers a much better value for a limited budget. The VTech DM221 audio monitor is the best choice in the category—it’s consistently a best seller at multiple retailers, with strong reviews (four out five stars over 4,703 reviews on Amazon) and similarly high ratings at Walmart, Target, and BuyBuy Baby.
The best monitor for sound in our tests is the Philips Avent SCD630, with a score of 8 of 10. This monitor has the best sound activation and background cancellation features in the group, and while the sound is bright, it is also clear without an echo. Most of the competition earned 4s and 5s for sound, with all of the Wi-Fi monitors only earning 4s. It seems that no matter how good your parent device might be, the Wi-Fi cameras struggle for the most part to transmit clear sound with good sound features.
The Philips Avent DECT SCD570/10 is a sleek looking, quality sound device that has a more extended range than much of the sound competition. It has a battery life of over 30 hours and excellent sound clarity for true-to-life sounds. The nursery unit has a nightlight, lullabies, mic sensitivity function, and a 2way talk to baby feature providing the most popular features for today's demanding parents.
From each category, we hand-selected our finalists: the monitors with the most positive reviews on Amazon and parenting blogs, plus any that had all four of our parent-favorite features. Then we sent several monitors home with three different testers, to see which ones actually made parents’ lives easier, and which ones were more trouble than they’re worth.
The features we focused on were those we thought either increased the performance of the monitor or made it more user-friendly for parents and increased the odds of getting good quality sleep. We looked for monitors that have sound activation that keeps the parent unit quiet when the baby isn't crying, so parents can potentially fall asleep faster because they don't have to listen to white noise. Some of the monitors were so loud, even at low volumes, that the white noise might keep light sleeping parents awake; this defeats the purpose of having a video product to begin with. We also liked the models with screens that automatically "wake" and/or go to sleep.
If you sleep in the same room as your baby or live in a small enough space that you can always hear or see what your baby is up to, you probably don’t need a monitor. Otherwise, most parents enjoy the convenience a baby monitor provides—instead of needing to stay close to the nursery or constantly checking on your child, you’re free to rest, catch up on Netflix or get things done around the house during naptime. Monitors can also double as a nanny cam to keep an eye on your child and their caretaker.