To use this pendant light, first, have it installed by a licensed electrician following the instructions in the box. It's designed for indoor use only, so don't place it outside. The light doesn't come with a globe, so you'll need to buy one that fits the E27 lamp holder (Max.72W). For maintenance, turn off the power before cleaning. You can gently wipe the aluminium body with a soft, dry cloth. If there are any issues within the 1-year warranty period, you can get a replacement.