In selecting a monitor that best fits your family, you have three major options to choose from an audio, video or a sensory monitor. Audio monitors allow you to hear the activities of your child (ex: crying) as they pick up sound. This type comes in both analog as well as digital models. The analog monitors are the most affordable but are usually still reliable. The talkback feature can also help maintain the bond of the parent and child, despite the parent being at a certain distance. Parents could sing their lullabies or read stories while they do the laundry or while they clean the house. Even at a distance, parents are empowered to interact with their child through the device. The set is synchronized to a predetermined frequency band that gives off a frequency modulation (FM) signal once it is switched on. More often than not, these portable monitors send out signals between the range of 49,830 MHz and 49,890 MHz. Why do you need to buy one? 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. 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. 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. If channel adjustments still won't work and the substitution of the appliance is not an immediate alternative, make an effort to keep the conflicting devices at a safe distance from one another. Doing so will somehow reduce the likelihood of interference. Other Safety Tips - Don't ever use a mere baby monitor to justify your absence.