The Motorola Audio Baby Monitor AM21 is a reliable and functional device that allows parents to keep a close ear on their baby's cries and coos. With its voice transmission and radio frequency, parents can easily hear their baby's sounds and be alerted if the monitor detects an out of range signal. The inclusion of volume control also allows parents to adjust the audio levels to suit their preferences. Ideal for monitoring a baby's well-being during nap times or overnight, this Motorola baby monitor provides peace of mind for parents.