Using these GU10 exterior wall pillar spot lights is easy. First, make sure to hire a licensed electrician to install them as per the instructions in the box. Once installed, you can connect them to a power source within the 110 - 265V AC 50/60Hz range. You'll need to buy the recommended CLA LED globes GU1001 or GU1002 separately and fit them into the GU10 lamp holders. For maintenance, keep the lights clean by gently wiping them with a dry cloth. Check the IP65 rating is appropriate for the location you're using them in to avoid any warranty problems. If there are any issues, you can take advantage of the 2 - year replacement warranty.