Using the Oja ceiling light is a breeze. First, install it in your hallway following the simple installation guide. To connect it to your Nordlux Smart Light, turn on Bluetooth on your device and pair it with the light. Once paired, you can use your phone to change the light from warm white to cool white and adjust the brightness. When using the light, make sure the voltage is within the 220 - 240V range. Avoid getting the light wet as its IP degree is IP20, which means it's mainly for indoor use. For maintenance, you can gently wipe the plastic and metal surfaces with a dry cloth. Since the cable isn't replaceable and it can't be mounted directly into insulation, handle these aspects with care. The light has a long lifetime of 25000 hours, but if you notice any issues, refer to the manufacturer's support.