Detailed Product Description it self has a special fuction ,with a photocell, is a twilight sensor that turn the lamp off when the sun goes down and the lamp on when the sun sets.1.size :146*146*130MM 2.weight:0.57KGS 3.mini led inside:0.25watt,output is about:18watt,it flash 4 ,6 or 8 every second4.can produce to suit for the 12VDC/24VDC5.lifespan is about 3 years6.dome:high quality PC material7 ...