And the sensory monitor is a movement detector that alarms the parent when it cannot perceive any movement from the child for more than 20 seconds. How Does It Play A Role In the Safety of the Child? What baby monitors basically do, is allow the parents to know their child s activities and to watch out for any possible problems from afar, especially if the baby is asleep. 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. The receiver, instead of just having speakers, already has LCD screens installed along with them. It has been the topic of discussions that baby monitors, especially audio types, pick up more than just sounds coming from the baby. Some parents tell stories of their baby monitors picking up EVPs. What are EVPs EVP is short for the term Electronic Voice Phenomenon. EVPs pertain to sounds or voices that are allegedly coming from beyond the grave. On top of the list is changing the channel or frequency of your baby monitor. If two devices are running on the same frequency, it will cause interference. So to prevent this from happening, you should try to change the frequency of either device. Wireless baby monitors are usually equipped with switches that allow parents to change frequencies easily. If the parents sleep in a different room from the baby, it would prove to be impossible to be able to monitor him or her perfectly unless you wake up every minute and check up on your little tyke. So the best way to do this is to use a baby monitor. With this kind of device, you can monitor your baby as if you were actually right there beside him or her. 1) Change The Frequency of Your Device Wireless devices such as baby monitors are created to have the ability to change frequencies. This ability of these devices can help in resolving any interference problems. If you think this is difficult to do, think again. It can be as easy as just flicking a simple switch on the device.