Using these PESINI wall lights is easy. First, make sure you have a licensed electrician install them following the instructions in the box. Once installed, simply connect them to a 220 - 240V power source. Since the globe is not included, you can choose a suitable one for the E27 lamp holder, with a maximum wattage of 72W. These lights are for indoor use only, so don't place them outside. For maintenance, you can gently clean the glass and iron parts with a soft, dry cloth. If you encounter any issues within the 1 - year warranty period, you'll get a replacement. And always be cautious of other suppliers offering similar but lower - quality products.