Mobile baby monitors make it possible for parents to keep tabs on their infants without the necessity of staying awake or standing outside the nursery door all night. A typical baby monitor set consists of two parts: a radio transmitter and a portable receiver. The radio transmitter must be positioned 8 to 10 feet away from your baby's crib. This way, exposure to the harmful waves is, if not eliminated, at least minimized. This next issue can be a disadvantage for some people but not for others. This issue is about the price. Digital baby monitors are quite more expensive compared to other baby monitors. This is expected though since it is using the latest of modern technology. A light alarm that activates whenever it picks up sound is always a good feature of the gadget. 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. And with you having a video baby monitor with night vision capability, will still be at ease since you will still be able to see your baby clearly on your monitor. Wireless Baby Monitors Baby monitors can be wireless or wired. Wired baby monitors make use of wire for the device on the baby and your device to be able to communicate with each other. In terms of aesthetics, wireless baby monitors also provide parents an advantage. You do not have to worry about wires sticking out or going out of place. Last but not the least you can easily transfer the device from one place to another. For example, if you want to leave your baby in the living room for a while, you can get the device from the baby s room and transfer it to the living room without going through the difficulty of moving the wires. Currently, there are two types of baby monitors: video baby monitors and audio baby monitors. Video baby monitors, as the name implies, use video footages for overseeing events in the room where the baby is located. It incorporates the technology used by webcams in computers. Instead of only using the simple transmitter with microphone, a camera is installed with it.