You might prefer one that has lights as well as sound. All the audio monitors we rated had this feature. The Philips Avent DECT SCD510, which sells for about $120, has a series of small LED lights on the parent monitor. The louder the sound in your baby's room, the more lights go on, so you'll notice his crying even with the unit set on mute. Audio monitors are generally less expensive than audio/video models.
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.
This monitor is known for its zoom lens, included in the box, that lets you see your baby up close even if you have to position it farther away from the crib. You can use the monitor to remotely adjust the camera, and you don’t have to worry about plugging the monitor in overnight—it can sit on your nightstand for up to 10 hours in the power-saving mode (similar to sleep mode on your computer, but it still provides sound monitoring while the display is off) and up to six hours with the display screen constantly on.
One minor distinction about the DXR-8 is that it comes with two interchangeable optical lenses (a standard lens and a zoom lens) and you can also buy a wide-angle lens. Having three different lens options is nice, but in practice we felt the zoom on the standard lens was sufficient, and we expect most buyers would probably not bother changing the lenses frequently, if ever.
Like many monitors in this price range, the SafeVIEW provides a lot of bells and whistles: remote zoom, tilt and pan of the camera, two-way communication and a range of 900 feet so you don’t have to stress about chatting with your neighbor outside during naptime. The SafeVIEW also has a built-in nightlight that you can turn on and off using the monitor. And, if the monitor is going nuts every time a big truck drives by or during a thunderstorm, you can decrease its sound sensitivity to not pick up the background noise.
The most reliable type of movement sensing product is the mattress pad option. This product is placed under the mattress, usually on a hard board and will only work with some types of mattresses. This unit relays messages to a nursery device that alerts parents on a parent device or with an alarm in the nursery (model dependent). The BabySense 7 is a good example of a sensor pad that works under your baby's mattress.
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.
A big screen, a camera that zooms and a built-in nightlight make the In View monitor a great pick when you’re on a budget. The monitor also offers all the standard features: low-battery and out-of-range indicators, sound-activated lights and rechargeable batteries for the handheld monitor. Use the camera as a tabletop or mounted on the wall. And if you plan on having a big family, the monitor works with up to four cameras.