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. What are the major benefits of getting a two-way monitor? Today, almost everything has gone digital. Cellular phones, computers and even simple household appliances, such as telephones and microwaves, have all switched to digital technology. However, the growing concern of many is whether these hi-tech gadgets can be considered safe for our health, especially in gadgets such as baby monitors that are usually placed in such a close distance to children. Since it is wireless, you can go anywhere around the house while bringing an LCD monitor to keep track of the status of your baby. You can be in the kitchen or in the garden and still be able to keep an eye over the baby since you are not limited with a wire. It is important to know though that these devices also have a limit to their range. These questions seem to have no specific and factual answers and so does the question Are EVPs real? A sound is just a sound and it all depends on how they are interpreted. If the sound of a cat is interpreted as a moo of the cow, then it comes from a cow. If an inaudible noise is interpreted as voices of people from the afterlife then it comes from people in the afterlife. As helpful as these gadgets may be, they could also turn out to be a nuisance every time you encounter interference problems. Unfortunately, such instances could take place quite often if you live in a flat with very close (as in proximity) next-door neighbors. There are actually a number of ways to get rid or avoid interference issues when using baby monitors inside an apartment building. 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.