Inhouse product
The DEKO Tools 900W Electric Drywall Sander with a No-Load Speed of 1400-2700rpm is a must-have if you work with drywalls. Its extendable handle makes it suitable for not only walls but ceilings too. The The The suction strength adjustment Comes in a DEKO Tools box.
It has a partially detachable sanding disk. You can remove it to get easy access to corners or perpendicular walls. The light is soft and not dazzling, and it will not hurt your eyes even if you work for a long time.