... mounting hole:10mm,.12mm,16mm CE, CQC&RoHS momentary pushbutton switch; Specifications:Contact Rating3A, 250V ACContact Resistance ≤50mΩInsulation Resistance≥1 ... )25,000 for latching, 50,000 for momentLife Expectancy(Electrical)100,000 for latching, 1,000,000 for momentary Mechanical Configuration ...