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.
Baby monitors may have a visible signal as well as repeating the sound. This is often in the form of a set of lights to indicate the noise level, allowing the device to be used when it is inappropriate or impractical for the receiver to play the sound. Other monitors have a vibrating alert on the receiver making it particularly useful for people with hearing difficulties.
Think about the size of your home and your daily routine when deciding which brand/model to buy. If you'll be making calls during nap time, for example, look for monitors with lights that let you know when your baby is awake. Of course you can accomplish the same thing by turning down the sound on a video monitor, but lights are more likely to catch your eye.
There are two basic types: audio and video/audio. Some are analog, others are digital. All monitors operate within a selected radio frequency band to send sound from a baby's room to a receiver in another room. Each monitor consists of a transmitter (the child/nursery unit) and one or more receivers. Prices range from about $25 to $150 for audio monitors and about $80 to $300 for audio/video monitors.
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.