Using these MR16 exterior wall pillar spot lights is easy. First, make sure you have a licensed electrician install them following the instructions in the box. Connect them to a power source with a voltage between 12 - 24V and use the required external control gear. Since the globes aren't included, you'll need to buy them separately. When it comes to maintenance, just wipe the aluminium body with a soft, dry cloth occasionally to keep it looking good. Also, always check the IP rating to ensure it suits your use. If there are any problems within 2 years, you can get a replacement under the warranty.