Schneider Electric GUG102RW 1-Pole Switch Module is an electrical switch component commonly used in household or commercial wiring systems. The switch controls a single circuit. It's used for devices or lights that only require a single wire to be interrupted to turn them on or off. 

The inner workings of the switch that handles the electrical connections and switching mechanism. 1 Gang is the number of switch openings or slots on the faceplate. It is designed to fit in a standard electrical box with room for one switch. 

So, Schneider Electric GUG102RW 1-Pole Switch Module fits in a standard electrical box and has a white faceplate, suitable for controlling a single circuit in the electrical system.