Just setup the wireless device for the baby anywhere you want in the room without worrying whether the length of the wire is enough to reach the other room where you will setup the receiver. 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. So to avoid interference, change the frequency of your baby monitor every once in a while and make sure that the frequency you use does not clash with frequencies of other devices. To change frequencies, wireless baby monitors are equipped with a switch that lets parents change frequency easily. 2) Another way to help in solving wireless interference is to find a proper location for the transmitter as well as for the receiver (baby unit and the parents unit). One-way monitors from the name itself, basically only transmit sound through a single channel wherein parents can hear the sounds that their baby makes from the other end. However, the much-improved two-way monitors can allow parents to talk back to their child with their own portable transmitter. Parents who have children with separation anxiety often prefer this type of monitor, as hearing a familiar voice could usually calm the child. Through this, they could at least do their usual work without having to feel worried that their child might not be safe inside the room alone. Many of the hi-tech monitors nowadays, especially the video or even movement sensitive monitors instantly alert the parents when there are problems detected. Sensory monitors even send alarms whenever it cannot detect movement from the baby for 20 seconds or more. To recharge the radio transmitter, simply plug it into the socket as it usually sits still at the side of your baby. Batteries, on the other hand, operate the portable receiver. Although this can be an addition cost, the price you pay in order to take pleasure in its portability is certainly worth it. 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.