... Waterproof high speed dome camera with IR 100metersFeature:1, 27X zoom camera, color to B/W , with IR-CUT switch, realize IR lamp control and zoom camera IR ... voltage constant current circuit design, ensure IR lamp work in long time, long life. IR lamp life lasting to above 20000 ... high quality components, high & minute subset into TV, long life Conductive slip ring, High-quality belts, Stable operation ...