2,IP66 waterproof,Anti-corrosion
4,cylinder-shape, looks much strong and nice
5, special clip seal end caps to be much convenient cable connection
6,various function for options
>Standard on/off
>on/off+0-10V dimmable
>on/off+DALI dimmable
>on/off +PIR sensor
>on/off+motion sensor
>on/off+emergency