1. Automatic lights and delay off according to the induction of human activities. Power-efficient, low-carbon, ... with double window, large diameter,2.Sensing: built-in light sensor, temperature compensation devices,3.Induction sensitive distance: more than ... all the time and bright by inducting, induction lights up to 1 minute, Size:75*82 mm Battery Tpye:3* ... .5cm G.W.N.W.: 4.5/4.0KGS led sensor light