HOBBYMATE Solar Motion Light, 16 LED Motion Sensor Solar Light for Garden Path Stairway Yard, 2 Mode Waterproof - Pack of 2 Size: 5.8" x 3.6" x 3.8" Color: Brushed Steel/Clear It infrared sensors detect subtle temperature changes caused by movement of people within the selected area of protection. The instant motion is detected, the lights turn on automatically. When the motion stops, the light stay on for approx 30 seconds It can illuminate your home, yard, driveway, patio and anywhere in which getting solar energy. The motion-sensing light is triggered. when someone or something enters its 1-2 meters range within a 120 degree sensing angle. A potential intruder could be scared away by the sudden burst of light, or if you simply need a lit pathway after parking your car, this can function that way too.