A solar cell attaining high efficiency in photoelectric conversion is provided. The label distribution sessions facilitate association of labels with either Radio Frequency channels or groups of the RF channels that extend from the remote PHYs to one or more cable modems. Preferably, the bodies are metal striplines, an electro-optical material is disposed between the striplines and the exposed surface, and the actuator is a CMOS chip that imposes a voltage to some or all of the lines.