These added features alert the deaf parent every time the baby is in need of attention. A number of products on the market also offer other means of alerting deaf parents to the cries of their infants. One particular product consists of receivers that come in two parts: a main clock and a tiny sound sensor. Sensory monitorsdetect the baby s slightest movements even during sleep. It fits under the mattress of the baby and alarms you when the baby stops moving or is absolutely still for 20 seconds. Some models available also come with audio monitors installed. These come with a portable parent s unit that sends you the alarm and allows you to hear your baby s activities. As of today, parents have different choices of baby monitors one of which is the wireless baby monitors. But even with all the advantages these gadgets provide, it is inevitable that there are also disadvantages. Comparing Wireless With Wired Baby Monitors Baby monitors can come as wired and wireless devices. Always remember to choose those with features that would fit the type of work that you do in order to make it easier for you to look out for the child. Also, the family budget in choosing a monitor must also come in mind. If you are decided on getting the best and if you have the means to splurge on high-end monitors, then there is absolutely nothing wrong with that. There have been a lot of reported cases by parents that they are getting signals from the baby units that are not relevant to the baby or the environment. Instead, they receive muffled, indefinable, and sometimes almost inaudible sounds which resemble voices and words coming from a human. When examined by experts, these sounds can t be technically explained. By simply positioning one radio transmitter in each room, you can listen to the sounds coming from your baby's room even if you're busy with house chores or other stuff. Then again, this added capability comes with a number of drawbacks. The baby monitors could interfere with each other. For that reason, you need to make sure that they are set in different frequency bands; otherwise, you will only be able to hear irritating electronic screeches.