Audio only monitors allow you to engage in two-way communication with your little oneTemperature monitoring feature makes it easy to check your baby's room perfect temperatureMute/sound detection feature alerts you when the baby makes a sound even the audio is turned offBacklit LCD display enable easy monitoring of baby during day and nightPortable parent unit can be powered either with wall outlet or AAA batteriesDECT Wireless technology enables dependable and steady connection with nil interferenceExtensive range up to 1,000ft. makes it easy to monitor your baby in any room in the houseUp to 10 hours of battery life gives you more peace of mindIncludes two rechargeable Ni-MH battery cells for the parent unit