Electric
The ZB4BW333 is a 40 mm Selector Switch from Schneider Electric that is part of their Harmony range of products. The switch knob is black plastic, and the entirely metal body provides durability for years of use. It has bicolour illumination; it is green when the switch is off, and if it is turned on, the illuminated section will turn red. This switch has four poles, and the voltage rating is 250V at 10A.