Using these spot lights is simple. First, make sure to have a licensed electrician install them according to the instructions in the box. Once installed, you can choose suitable GU10 bulbs (up to 35W) and screw them into the lamp holders. For daily use, they'll light up your exterior pillars just fine with the 110 - 265V AC power. When it comes to maintenance, since they have an IP65 rating, they can withstand normal outdoor conditions. But it's a good idea to occasionally check the fixtures for any signs of damage. If you encounter any problems within 2 years, you can get a replacement under the warranty. Just keep in mind that using the lights in a place that matches the IP65 rating is crucial to avoid disappointment and warranty issues.