This product is the shop light .it has 0.6m and 1.2m and 2.4m. it has 20w 40w.it  is listed byu DLC ETL..Inout voltage is100-277v.independent switch can control the led light individually.use special aluminum composite structure design.frosted and clear pc cover for option.use plug series connection method between lamp is convenient for installation, it has ceiling hanging wit chain,hanging with pole.it can save labor cost.