With DECT digital technology, you are guaranteed a secure zero interference connection between you and your baby. For extra peace of mind, monitor your baby's room temperature from your parent unit. The rechargeable parent unit gives you up to 12 hours of cordless monitoring up to a 300 meter range. Philips SCD489/05 DECT Baby Monitor has room temperature thermometer, fiver lullabies to soothe baby and starry night light. It also has parent talkback - two intercom to reassure your baby, sound level lights, rechargeable parent unit, volume control and low power indicator.