The most reliable connection to your baby. Reassurance and well-being for you and your baby. Our Philips AVENT SCD580/01 Baby Monitor delivers complete comfort and reassurance for you and your baby. Providing the most reliable connection combined with a variety of soothing features. Your baby will love the night light projector. Requires 4 x 1.5 volt AA Alkaline batteries for back up baby unit, included.