PIR sensor. You can sensitivity lux switch to a minimum. The light will turn on only when it detects someone passing by in the dark. Lux switches to the maximum. The lights will also work during the daytime. Sensor sensitivity adjustment range is (lux: 5 to 2000, lighting time: 8 sec to 8 min.).The lights will also work during the daytime. Use this aluminum lamp indoors and outdoors. Entrance lights can be placed in the walkway, porch, corridor, patio, garden, balcony, or garage. The lighting fixture lights up the darkness and is also a perfect decoration with a classic appearance, making it a great choice! This wall lamp has special LED chips with a lower defect rate, higher cost, and better quality. The Wall decor lantern's good design ensures quality and safe operation. Not only does it reduce your energy waste, but it also saves you money.