Testing battery life for all the monitors was for the parent device only. While some of the dedicated options have a battery in the camera in the event of a power outage, most do not, and they are not intended for use as an all-night option. So while we would support a cordless camera for monitoring baby, due to safety concerns with babies and strangulation hazards, none of the products in our review offer this.
Wireless systems use radio frequencies that are designated by governments for unlicensed use. For example, in North America frequencies near 49 MHz, 902 MHz or 2.4 GHz are available. While these frequencies are not assigned to powerful television or radio broadcasting transmitters, interference from other wireless devices such as cordless telephones, wireless toys, computer wireless networks, radar, Smart Power Meters and microwave ovens is possible.
Many baby monitors actually work against the very thing you need them for most: getting some sleep! Whether you’re sitting up at night staring at the screen or pressing your ear to the speaker to see if you can hear anything, a lot of available monitors require your full participation. Not the Owlet Smart Sock 2. This smart monitor actually helps you reclaim hours of much-needed sleep as a new mom. Instead of studying a screen or jumping up every five minutes to check on your baby, this tiny device gives you hard proof that your baby is still OK in the next room.
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).
Security: Whether you’re skeptical of people hacking baby monitors or deeply concerned about it (and there are stories!), the bottom line is that some monitors are at more risk than others. A Wired story from 2015 refers to security firm Rapid7’s findings that Wi-Fi–enabled monitors were particularly vulnerable. We figured people would prefer the not-hackable type, and we talked to a security expert about how to protect your privacy.
Start by deciding whether you want an audio-only monitor or one that lets you see as well as hear your baby. Some parents are reassured by hearing and seeing every whimper and movement. Others find such close surveillance to be nerve-racking. Having a monitor should make life easier, not create a constant source of worry. You might find that you don't really need a monitor at all, especially if your home is small.