The lights consist of two parts: the LED light and the power receiver. The power receiver is typically embedded in the staircase and contains a coil that is connected to the LED light. The LED light is powered by an electromagnetic field that is generated by a power transmitter located at the bottom of the staircase.
When a person approaches the staircase, their presence is detected by a sensor that triggers the power transmitter to send an electromagnetic field to the power receiver embedded in the staircase. This electromagnetic field then generates a small amount of current in the coil of the power receiver, which is used to power the LED light and illuminate the staircase.
The lights are designed to be energy-efficient, as they only turn on when someone is present on the staircase, and they automatically turn off after a certain amount of time to conserve energy. Additionally, since they are embedded into the staircase, they provide a sleek and modern look without taking up any additional space.