Essential Digital Video Infant Monitor You can view your child at all times and stay in contact with him both inside and outside the house with the Essential Digital Video Baby Monitor. Excellent eyesight and precise aiming are provided by its huge 2.4-inch display and swiveling infrared camera, which can operate in the dark. By configuring the voice-activated, the parent unit will only turn on when the child detects sounds. High levels of privacy and interference-free reception are made possible by the digital technologies employed. The parent and infant devices can be powered by an AC adaptor or a battery.