... can light a large area. 2. .it's easy to control and modify Technical parameter 1.Light source:400W-1000W High ... steel, hot-dip galvanized 5.Mode of switch: hand control,time control and microcomputer control. 6.light source: 6-24*400W-1000W Sodium lamp ... lighting effects, concentrated light,light uniformity, glare small, easy to control and repair materials description 1.by the poles for the ...