Using these wall lights is easy. First, make sure you have a licensed electrician install them according to the instructions in the box. You'll need to provide your own E27 globes, with a maximum wattage of 60W. Once installed, they'll work well within the 110 - 265V AC voltage range. For maintenance, simply wipe the faceplate and diffuser with a soft, dry cloth. Avoid using abrasive materials. In areas with harsh weather or heavy rainfall, if not properly protected, the lights may not perform as well. So, choose the right IP rating for your environment to ensure long - term use and to keep your warranty valid.