The analog monitors are the most affordable but are usually still reliable. They work through the radio frequency and use FM signals to transmit the sound. The major set-back of this variety is the tendency of other receivers picking up the same signal that your monitor transmits, thus less privacy and disturbances are possible. It is the medical term used to describe the occasional cessation of breathing of a person. Even though it is normal, it may also be a symptom of something more serious that is health related. Basically there are three types of apnea: obstructive, central and mixed. Obstructive apnea is most common in babies and children. In the case of using baby monitors in blocks of flats with a dozen or more tenants, the devices may encounter several problems which include interference. Resolving Wireless Baby Monitor Interference Baby monitors are devices that help parents watch over their babies. But no matter how these gadgets may seem to help, there are times when they become annoying especially when you encounter interferences. Professional Wireless Baby Monitors LCD Baby monitors are big help to parents who need a lot of things to do but do not want to sacrifice the security of their baby. Baby monitors can easily be purchased online or in your local shops. However, there are also baby monitors that are installed by professionals. You can actually use baby monitors even during the day when you have other things to do around the house like cooking or other household preparations. Wireless VS Wired Baby Monitors Video and audio baby monitors can either be wired or wireless. Both modes have their own advantages and disadvantages. This becomes very useful in instances wherein you might be preoccupied with loud noises in the area such as the sound of the television or vacuum. This will at least keep you alert and aware if the baby is making noises. Having an indicator on the gadget that activates whenever the battery is low prevents instances of the battery running out without you knowing.