After that you can switch on all other devices but you should always have the cordless phone switched on last. Another way to fix interference issues is by using digital baby monitors instead of analog ones. The latest digital technology has incorporated some fixes to solve interferences. The only setback with this solution is that it may cost you a little bit more. These two-way baby monitors not only provide parents with a means to check on their baby, but a means for parent-child bonding as well. What is the difference between the two-way monitor and one-way monitor? 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. Of course, if you have the money for it, then this would not be much of a problem. Another minor disadvantage of this kind of baby monitoring is that you have to confide with the company if you want something to be changed positions, monitoring gadget, monitoring system, etc. Unlike when using your off the shelf baby monitor which you can position to your liking anytime anywhere, you still have to wait for their personnel to come and do it for you. 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. A transmitter device with a microphone is placed in the room of your baby (usually near the baby). Another device with a receiver and with speakers can be carried by you, the parents, or the baby sitter, or anyone who is taking care of the babies. With baby monitors, you can keep track of your baby s even if you are doing something else in the proximity of your house. But when examined by professional ghost hunters, they turn out to be ghost voices also known as electronic voice phenomenon. Baby Monitors and Interference Baby monitors can either be wired and wireless. Both types of devices have their own advantages and disadvantages. For wireless devices though, one of the disadvantages is interference.