The Slim&Clear™ Digital Audio Monitor is a wonderful addition to any home. The 2.4 GHz digital technology eliminates interference and provides a secure and private transmission. This same digital technology also automatically selects a free and secure channel so you only hear your baby. The unit allows parents to monitor their baby in the nursery from any part of the home within 650 feet. The Parent’s Unit features volume control, visual sound lights, a convenient belt clip and a rechargeable battery.