Using your Omari wall light is easy. Just touch the switch on the fixture to turn it on or off. To adjust the brightness, use the Moodmaker™ dimmer on the base. You can also adjust the lamp head to direct the light where you need it. For installation, make sure it's done by a professional as it's for indoor use only. When cleaning, use a soft, dry cloth to wipe the metal body. Avoid using harsh chemicals as they may damage the finish. The cable is replaceable, but if you need to replace it, do so carefully following basic electrical safety rules. This light has a 5 - year LED guarantee, so if you experience any issues with the LED within this period, contact the manufacturer.