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.