Using these LED up/down wall lights is easy. First, have a licensed electrician install them according to the instructions in the box. Once installed, they'll provide great lighting for your exterior. The lights work best with a 220 - 240V AC 50/60Hz power supply. Remember, they're not for dimming. You can use them with 2-way switches or pair them with PIR or Microwave sensors. Keep in mind the ambient temperature should be between -20 to 50 °C. To avoid warranty issues, make sure the IP65 rating is appropriate for your use. For maintenance, just wipe the lights with a soft, dry cloth from time to time.