Piano Keyboard Switches 4 speed , OEM Service Offered , Design Service Offered,Buyer Label Offered Keyboard Switches 4 speed specifications 1)Contact Resistance ≤20mΩ ... 1A 125/250Vac 6)Temperature Range 0~85oC The keyboard switches are widely used in household electrical equipments and ... , the multimedia products and the electromotional instruments field etc. Piano Keyboard Switches 3-4 speed