Using this drywall sander is easy. First, adjust the length of the tool according to your needs with the built - in extensions. When you're done, fold it in half and put it in the carrying bag for storage. Connect the sander to a standard vacuum hose to collect dust and keep your working area clean. Make sure to use the 8.86 - inch SDR9 series sanding pads for best results. When using the sander, keep the voltage at 120V/60Hz. The halo light on the head can be controlled by the on - off switch. For maintenance, regularly check the sanding pads and replace them when they're worn out. Keep the tool dry and clean to ensure its long - term performance. Also, remember that this sander is certified by ETL for use in the US and Canada.