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. The device usually functions by means of transmitting sound from the baby's room to a portable receiver that can be conveniently placed inside a pocket or strapped around the waist. People with excellent hearing can rest assured that their infants' cries will be heard, even if they're in another part of the house. In essence, a mobile baby monitor is a radio transmitter coupled with a receiver. The set is synchronized to a predetermined frequency band that gives off a frequency modulation (FM) signal once it is switched on. More often than not, these portable monitors send out signals between the range of 49,830 MHz and 49,890 MHz. Installation of different baby monitors can sometimes be hassle especially if you do not know anything about gadgets and other electronic devices. Other people will do it for you while still asking for your consultation. The quality of devices used as baby monitors will also be of high calibre. Professionals, to live up to their name, will do anything to please their customers. She has to divide her time in taking care of the baby and fulfilling her responsibilities to other family members, and most especially to themselves. A mother has one, two, many things to do around the house while making certain that their well-being plus their husbands satisfaction is maintained. Keeping watch of the baby round the clock is simply an impossible feat. These devices have enough electricity in them to cause shock. 3) Baby monitors always come with a manual or an instruction booklet. Always follow the instructions of the manufacturer religiously so as not to encounter any problems with the device that you purchased. 4) Baby monitors, especially the parents units are very handy and can easily be carried around.