The Angelcare AC401 baby monitor has a choice of voice activated or continuous transmission so that you can rest assured your baby is safe and sound. This Angelcare monitor features a sensor pad to monitor baby's movement, and has 4 programmable alarm functions. The monitor has an extended reach of 100 meters indoors and 250 meters outdoors. The Angelcare AC401 movement & sound baby monitor also features a full colour LCD digital display and comes with a rechargeable, portable parent unit.