A LED step light with 9 watts of power consumption is a type of energy-efficient light fixture commonly used for illuminating stairs or other similar areas. The light output of such a fixture can vary depending on the specific model and design, but typically it can provide sufficient illumination for safety purposes while consuming minimal energy.

In terms of installation, LED step lights can be recessed into the wall or surface-mounted depending on the design and location. They are usually wired to a low-voltage power supply, which helps to reduce energy consumption and minimize the risk of electrical hazards.

Overall, a LED step light with 9 watts of power consumption can be an effective and efficient lighting solution for illuminating stairs and other areas where safety and visibility are important.