... are widely used in household electrical equipments and office facility,multimedia products and Fan. Household appliances 2,3,4,5 Speed ... 1)Contact Resistance ≤20mΩ 2)Insulation Resistance ≥100MΩ ,at 500 VDC 3)Dielectric Strength 1000VAC/ 1minute 4)Electrical Life ≥10000 cycles ... and the electromotional instruments field etc. Household appliances 2,3,4,5 Speed Piano switch,keyboard switch for Fan and ...