While digital monitors minimize the possibility of unwittingly broadcasting images and sounds to other devices, any wireless device (analog or digital) can interfere with other wireless devices, such as your baby monitor, cordless phone, wireless speakers, or home wireless router. To solve the problem, first, try changing the channel on your baby monitor or on your router. If you still have interference and you can't return the monitor, try keeping other devices as far away from your baby monitor as possible.
It may surprise you to hear that simply being able to last through the night, unplugged, with the display off, qualifies as exceptional battery life for a baby monitor. The Infant Optics was one of the only monitors in our testing that could easily do that, and then last a while longer the next day before needing a charge. (The manufacturer claims it lasts 10 hours with the display off—we got that amount of time off a full charge, even when checking the display intermittently.) This model also charges via a USB connection, which actually sets it apart from a variety of competitors, some of which use ineffective and inconvenient proprietary DC chargers or even disposable batteries.
Sound devices relay what is happening in baby's room via sound only. A great sound option is quiet unless the baby is making noise so that you won't be disturbed by white noise or constant static. This basic monitoring type can be all you need if your goal is being alerted when your baby is crying and needs your assistance. This style can be elementary with sound only like the V-Tech DM111 or it can have bells and whistles like a nightlight, 2-way talk, lullabies, and mic sensitivity adjustment features like the Philips Avent DECT SCD570/10. Most parents can get by with a sound only device as it provides the information you need to determine if your baby needs you or not.
This is the second most expensive baby monitor on our list (coming in just under $250), and there is a lot to love about it. First, it has the Samsung reliability and quality control, making it a long-lasting baby monitor that isn't likely to drop signals in the middle of the night. Second, it has a large 5" display with high definition 720p resolution. Third, it has the two-way intercom that allows you to not only hear but also to speak to your baby. Fourth, it has automatic voice activation so if your baby fusses or says something, the screen will turn on and alert you that something's up. It also has a pan-tilt-zoom camera, selectable music/lullabies and a night light on the camera (you can turn on/off remotely), and is expandable up to 4 cameras with just the one display. With all these awesome features, why is it second on our list? In our side-by-side comparison of the Infant Optics and this Samsung, we found the Infant Optics to come out ahead in several regards. First, let's talk about a few advantages of the Samsung: it has a larger screen than the Infant Optics, selectable music, the nightlight, and is expandable up to 4 cameras that you can view simultaneously on the single screen (you can buy the extra baby cameras here). That's a lot of great features. However, when we compare it to something like the Infant Optics that has the same price, there are several disadvantages relative to the Infant Optics and other baby monitors on this list. First, even though Samsung SEW3043W Brightview HD monitor touts a robust 900-ft range, we noticed that when we went outside the signal dropped repeatedly in our back or front yards; it was quite good, however, when going up to the third floor or basement while still inside the house. So there are some definite limitations on the range and signal connectivity. Second, the Infant Optics has the baby room temperature monitor, which we found useful during a few summer nights when we didn't realize how warm it was getting in the baby's room. Third, even though the Infant Optics screen is smaller, we found it to be a bit faster and more responsive as a touch screen, and a bit brighter as a monitor. The two night vision capabilities were about the same. With all these limitations, we're surprised that the Samsung is quite a bit more expensive than the Infant Optics.
Movement products are designed to sense the movement associated with a baby breathing. These products attempt to discern when your little one has not moved within a prescribed period that could indicate that they have potentially stopped breathing. While this may seem like a no-brainer option for parents worried about Sudden Infant Death Syndrome (SIDS), they are not foolproof, have not been approved by the FDA as a medical device, and are known to have false alarms where the baby is fine but then suddenly awakened by a loud alarm. While it is an interesting kind of product, we caution parents that this type of device is not a substitute for safe sleeping practices and doesn't prevent SIDS. However, if you are willing to accept false alarms, it can provide another layer of monitoring to help some parents sleep better at night. Movement sensing products are only useful until babies start to roll over, at which point they become unreliable.
One minor but potentially annoying flaw: The “on” lights on the parent unit are a touch bright, and you may be more sensitive to them since you’re likely to have the unit within view as you sleep. They appear as greenish yellow light from the face of the unit, and a charging light, which is blue when it’s fully charged. Depending on how sensitive you are to light, you may want to lay the display face down on a nightstand or cover the status lights with tape.
This year alone we have seen over 30 new baby monitors enter the market, most of which are low-quality products being mass produced in China. They are cheap and might even work well for a few weeks or months, but give them a little more time and they will start to have all sorts of issues. We've seen way too many melting chargers, malfunctioning screens, and units that are completely dead after a few months. Don't waste your money! Here's some of the factors we consider in our testing:
Wireless encryption: This ensures that no one else can tap into your monitor’s “feed” and see what’s going on in your house. WiFi-enabled monitors are great for portability and range, but may be more susceptible to hacking. If you go this route, be sure to secure your home wireless network and keep the monitor’s firmware updated. Otherwise look for digital monitors with a 2.4 GHz FHSS wireless transmission.