The IVA-2259 identifies day and night automatically and will only illuminate at night, when movement is detected and Turns off automatically after 30 seconds if no motion is detected.If set to automatic: It will not illuminate by day or when another light source is detected. Can also be set to ON to always stay onThe night light instantly turns on when it detects motion, and can detect motion from as far as 15 feet away with 180 degrees of vision.The bright LED never needs replacing it's so efficient that you will get more than 2,400 activations on one set of batteries.No hardwiring required; just load with 4 AA batteries (not included) and turn on. Incudes 2 mounting options: 1. Peel the adhesive strip of Velcro (included) and stick to the wall 2. Mount the screws (included) to wall and connect it to the Mounting Holes