The Aroma-Snooze has a 1.8m long power cord and needs to plugged into a standard wall outlet.
An ideal place would be on a side table or dresser within eyesight of your child. The glow of the red light will illuminate the room enough even if the child rolls over and faces the opposite direction.
Mist coverage is around 30-35 square meters which will cover a large bedroom though also ideal for a smaller nursery.