Central apnea is very rare in adults but quite common in babies especially those who were born prematurely. Unlike obstructive apnea, this can happen at any time of the day. The third type of apnea is called mixed apnea. This condition is the combination of obstructive apnea and central apnea. This is particularly very common in infants. From time to time, their receivers are able to pick up signals from their neighbors' wireless devices baby monitors included. Because of these occurrences, a lot of people have made it a point not to mention any private or confidential information while the baby monitor is switched on. Interference with cordless phones and wireless routers is also a common problem. With these devices, you will still be able to monitor your baby even if he or she is in another room. What Are Baby Monitors? Basically, a baby monitor, also known as a baby alarm, is a device that can be used to monitor your children or babies even if they are located in a separate room than yours. It is a simplex transmitter and receiver system that can be used to remotely listen for different noises made by your kids and babies. However, the growing concern of many is whether these hi-tech gadgets can be considered safe for our health, especially in gadgets such as baby monitors that are usually placed in such a close distance to children. A lot of parents nowadays fear that if they use a digital monitor to help them keep watch of their child, they might be exposing their offspring to too much of electromagnetic radiation and this may cause significant damage to the child s nervous system. This feature allows parents to carry the device around without much effort. If you intend to take the receiver anywhere in the house for extended periods of time, test out the attachment method just to be sure that it's durable enough to endure daily usage. In addition, you also need to check the battery life and power source. So to prevent this from happening, you should try to change the frequency of either device. Wireless baby monitors are usually equipped with switches that allow parents to change frequencies easily. The next option in fixing interference is by properly placing the baby monitor, both the baby s and the parent s units, in the proper location.