The power supplies are included and can be easily and safely connected via a plug-in connection. Each panel is powered by its own power supply. The grid lights are set in a robust aluminium frame and equipped with a diffuser plate. They can be easily inserted into any grid ceiling, system ceiling. this high-quality LED with excellent colour rendering index is particularly suitable for use in offices, meeting rooms and showrooms. colour: white Material: aluminum alloy + PMMA Size: 30 x 30cm Package Contents: 2 x ceiling light Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.