For parents who want to make sure their little one is as comfortable as possible during naps and bedtime, there's the Summer Infant SecureSleep? Audio Baby Monitor. This monitor not only lets parents keep a close ear on baby but acts as a room thermometer and soft glow nightlight as well. The soft glow of the baby's unit changes colors signifying if the room is too cold, too hot or just right. Features:  Audio monitor that also monitors the nursery temperature 900 MHz digital technology for a private transmission 650? range Baby unit softly glows colors to signify temperature Red = too hot; blue = too cold; yellow = just right Both units have large LCD screens with F? or C? option Parent unit features: belt clip and LED sound lights Age: Birth   up Rechargeable battery included.