Using these spot lights is quite straightforward. First, since an external control gear is required, connect it properly according to the instructions. Ensure your input voltage is within the 12 - 24V range. When it comes to installation, remember that a licensed electrician must do it. The installation instructions sheet in the box will guide you through the process. As for maintenance, because of the IP65 rating, these lights can withstand some dust and water, but it's still a good idea to clean them occasionally with a soft, dry cloth. Always double - check the IP rating to make sure it fits your usage scenario to avoid any warranty problems.