Liberty's Brightview Safe Light Kit turns on when there is motion and turns off after five minutes (adjustable). The detachable corner mount allows the wand to easily slide in and out for adjustable lighting and changing of the batteries. Motion is detected by changes in the amount light. There must be a small amount of light for Brightview Lights to detect motion and activate the lights. If your safe is in a dark location, there may not be enough light to activate the motion detection.