The parts are genuine Otto product. The detailed technical spec is found in the website below;
http://www.ottoexcellence.com/search/default.aspx?keyword=T9-CL2-27E
TOGGLE SWITCH, DOUBLE POLE, LOW LEVEL
DIMENSIONS: 1.2670"W X 0.9115"TH X 2.89LWEIGHT: 1.552OZ.